The Internet can be a great way to connect with people. The latest web craze is social networking on websites such as MySpace. More than 65 million young people use online social networking sites.
That cyberspace(网络空间)trend is causing problems in school, however. In a recent survey, nearly 36 percent of school administrators said that social networking sites troubled learning in their districts. Should school districts ban sites like MySpace?
Teachers are worried that some students use social networking to post personal information and to cyber bully(恐吓)other students. One of the biggest dangers comes from people who find out kid’s personal information.
Many districts have blocked students from accessing or using social networking sites from school computers, and some have suspended(暂缓)students for posting harmful material on those sites from their home computers. Nearly two-thirds of US kids have computers in their homes, according to the US Census Bureau.
“It is important to keep in mind that just blocking access to social web sites at school is not the end of the story,” warns NSBA executive director Anne Bryant, “Most of the misuse of these sites takes place at home but still affects the classroom.”
Some educators aren’t as quick to pull the plug on social networking. They say the main problem with sites like MySpace is that students don’t understand the dangers involved in using them. “Many students are posting personal information about themselves without regard to who has access to that information,” Jim Hirsch said, “Schools should focus on educating their students and their parents on how to be safe online.”
Experts argue that too many schools are forbidding students to use social networking web sites without thinking about their educational benefits. “Social networking web sites can help connect students in the United States to their peers in other countries, providing invaluable lessons in foreign cultures,” explains Hirsch.
29．Where do students usually misuse social networking sites?
A. At the teacher’s office.
B. At the net bar.
C. At the classroom.
D. At home.
30．The underlined sentence in Paragraph 6 may mean ___________.
A. some educators are in favor of students’ using social networking sites
B. some educators can’t block students from accessing social networking sites
C. some educators can’t connect social networking sites easily
D. some educators find it difficult to close social networking sites
31．Which of the following is true according to the passage?
A. The Internet can’t be a good bridge to get along well with students.
B. There are some students threatening other students by using social networking.
C. Most of the misuse of these social web sites takes place at school and affects the home.
D. Too many schools allow students to use social networking sites without Question.
32．What might be the most suitable title for the passage?
A. Lessons Online? B. Friendship Online?
C. Dangers Online? D. Information Online?
Nuclear power's(核能的) danger to health, safety, and even life itself can be described in one word; radiation(辐射).
Nuclear radiation has a certain mystery about it, partly because it cannot be detected (探测) by human senses. It can't be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can't detect them, sense them, without a radio receiver. Similarly, we can't sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things.
At very high levels, radiation can kill an animal or human being outright by killing masses of cells (细胞) in important organs (器官). But even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be significant. This is the case when only a few cells are hit, and if they are killed outright. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in an unusual way. They can grow into cancer. Sometimes this does not show up for many years.
This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the knowledge of the person at the time that damage has occurred. A person can be irradiated(放射治疗) and feel fine, then die of cancer five, ten, or twenty years later as a result. Or a child can be born weak or easy to get serious illness as a result of radiation absorbed by its grandparents.
Radiation can hurt us. We must know the truth.
21． According to the passage, the danger of nuclear power lies in __________.
A. nuclear mystery B. radiation detection
C. radiation level D. nuclear radiation
22．Radiation can lead to serious results even at the lowest level ________.
A. when it kills few cells
B. if it damages few cells
C. though the damaged cells can repair themselves
D. unless the damaged cells can reproduce themselves
23．Radiation can hurt us in the way that it can _____.
A. kill large numbers of cells in main organs so as to cause death immediately
B. damage cells which may grow into cancer years later
C. affect the healthy growth of our younger generation
D. lead to all of the above results
24．Which of the following can be best inferred from the passage?
A. The importance of protection from radiation cannot be overemphasized (过分强调).
B. The mystery about radiation remains unsolved.
C. Cancer is mainly caused by radiation.
D. Radiation can hurt those who do not know about its danger.
The United Nations Environment Program (UNEP) says 200 million Africans go to sleep hungry, that number represents 23 percent of the population on the continent. A new UN study shows that eight out of ten countries facing the worst food shortage are in Africa.
Recently African experts, farmers and others gathered in Kenya for two days of discussion. They debated ways to feed the growing human population in Africa and deal with rising temperatures on earth surface.
The UN Climate Change Coordinator for Africa, Richard Munang was one of the speakers. He noted a need to increase food production to feed the population, but he said this must be done without putting more pressure on the environment. He said it is important to find ways to feed people without destroying forests, rivers and seas that provide food.
At the meetings, Emmanuel Dlamini served as a negotiator for One Africa. In his opinion, climate change is here to stay. He says African government and farmers have to look for ways to deal with the changes.
African farmers say that a combination of unpredictable rain and rising temperatures creates an environment for crop diseases that affects production.
The conference also heard from a representative of Nestle, one of world’s largest food companies. Nestle Africa’s Hans John says farmers need assistance from food processing companies and non-governmental organizations to deal with challenges.
47. Which of the following statements about the discussion mentioned in paragraph 2 is not correct?
A. It took two days.
B. Ways to feed global human population are discussed.
C. African experts, farmers and others joined the discussion.
D. Rising temperature is a topic of the discussion.
48. Richard Munang will most probably agree with ______.
A.all measures should be tried to feed the population
B. we should find ways to feed the population without destroying the environment
C. African government and farmers have to look for ways to deal with the changes
D. food processing companies and non-governmental organizations should deal with challenges
49. African farmers believe ______ lead to crop disease.
A. unpredictable rain and growing human population
B. destroying forests, rivers and seas
C. rising temperature and low production
D. unpredictable rain and rising temperature
50. Which of the following will be the best title?
A. Growing Population and Rising Temperature
B. Ways to Feed Human Population
C. Discussion to End Hunger in Africa
D. Food Shortage in Africa
Welcome to your future life!
You get up in the morning and look into the mirror. Your face is firm and young-looking. In 2035, medical technology is better than ever. Many people your age could live to be 150, so at 40, you’re not old at all. And your parents just had an anti-aging treatment. Now, all three of you look the same age!
You say to your shirt, “Turn red.” It changes from blue to red. In 2035, “smart clothes” contain particles(粒子) much smaller than the cells in your body. The particles can be programmed to change clothes’ color or pattern.
You walk into the kitchen. You pick up the milk, but a voice says,” You shouldn’t drink that!” Your fridge has read the chip (芯片) that contains information about the milk , and it knows the milk is old . In 2035, every article of food in the grocery store has such a chip.
It’s time to go to work. In 2035, cars drive themselves. Just tell your “smart car” where to go. On the way, you can call a friend using your jacket sleeve. Such “smart technology” is all around you.
So will all these things come true? “For new technology to succeed,” says scientist Andrew Zolli, “it has to be so much better that it replaces what we have already.” The Internet is one example. What will be the next?
33.We can learn from the text that in the future .
A .people will never get old
B. everyone will look the same
C. red will be the most popular color
D. clothes will be able to change their pattern
34.What can be inferred from Paragraph 4?
A. Milk will be harmful to health.
B. More drinks will be available for sale.
C. Food in the grocery store will carry electronic information.
D. Milk in the grocery store will stay fresh much longer.
35.Which of the following is mentioned in the text?
E. Nothing can replace the Internet.
F. Fridges will know what people need.
G. Jacket sleeves can be used as a guide.
D.Cars will be able to drive automatically.
We know that hugs make us feel cosy inside. And this feeling could actually ward off stress and protect the immune (免疫) system, according to a new research from Carnegie Mellon University.
It’s a well-known fact that stress can weaken the immune system. In this study, the researchers sought to determine whether hugs could protect individuals from the increased sensitivity to illness brought on by the particular stress that comes with interpersonal conflict.
“We know that people experiencing ongoing conflicts with others are less able to fight off cold viruses. We also know that people who report having social support are partly protected from the effects of stress on psychological states, such as depression and anxiety, ” the study’s lead author, psychologist Dr. Sheldon Cohen , said in a statement. “We have tested whether awareness of social support is equally effective in protecting us from sensitivity to infection caused by stress and also whether receiving hugs might partially account for those feelings of support and thus protect a person against infection.”
In the experiment, over 400 healthy adults filled out a questionnaire about their perceived (感知到的) social support and also participated in a nightly phone interview for two weeks. They were asked about the frequency that they engaged in interpersonal conflict and received hugs that day.
Then, the researchers exposed the participants to a common cold virus, and monitored them to assess signs of infection. They found that both perceived social support and more frequent hugs reduced the risk of infection associated with experiencing interpersonal conflict. Regardless of whether or not they experienced social conflicts, infected participants with greater perceived social support and more frequent hugs had less severe illness symptoms.
“This suggests that being hugged by a trusted person may act as an effective means of conveying support and that increasing the frequency of hugs might be an effective means of reducing the effects of stress,” Cohen said. “The apparent protective effect of hugs may result from the physical contact itself or hugging being a behavioral indicator of support and closeness. Either way, those who receive more hugs are somewhat more protected from infection.”
If you need any more reason to wrap your arms around someone special, consider this: hugs also lower blood pressure, reduce fears, improve heart health and decrease feelings of loneliness.
29. In Paragraph 1, the underlined words “ward off “can be replaced by ____.
A. produce B. increase C. prevent D. support
30. Dr. Sheldon Cohen’s experiment shows that ____.
A. hugs can hide serious illness symptoms
B. social conflicts can monitor signs of infection
C. social support can reduce the risk of having a cold
D. depression and anxiety result from less social support
31.The passage aims to convey that ____.
A. hugs can have protective effects B. social support can cure diseases
C. interpersonal conflicts cause infections D. stress can weaken our immune system
32. The passage is most likely to be found in ____.
A. a social science magazine B. a commercial brochure
C. a medical report D. an academic essay
Can animals be made to work for us? Some scientists think that one day animals may be taught to do a number of simple jobs. They say that in a film or on TV we may see elephants, or monkeys, dogs, bears, or other animals doing a lot of things. If you watch carefully, you may find that those animals are always given something to eat in return for doing them. The scientists say that many different animals may be taught to do a number of simple jobs if they know they will get something to eat in return.
Of course, as we know, dogs can be used to guard a house, and elephant can be used to do some heavy jobs. And we can also teach animals to work in factories. Apes(猿猴), for example, have been used in America to help make cars and scientists believe that these large monkeys may one day get in （收割）crops and even drive trains.
4. Many different animals may be taught to do some simple jobs if ____.
A. they have enough food to eat
B. they learn they will get something to eat in return after doing them
C. if they are sent to school
D. they are wise
5. ____ can be trained to work for us.
A. Only a few animals B. Quite a few animals
C. Few animals D. No animal
6. Many scientists are working hard to ____.
A. make monkeys get in crops and drive trains
B. make monkeys guard house like dogs
C. make bears get in crops
D. make many machines
Scientists who study insects (昆虫)are troubled now.All across the United States，bees are leaving their hives(蜂箱)and never returning.According to the beekeepers across the country,25 to 40 percent of the bees in the United States have left their hives since last fall.So far，no one can explain why.
Bees play an important role in the production of about one third of the food we eat.A large number of plants not only need people's care but also need bees that spread pollen (花粉)from flower to flower.Without this_process，a plant can't produce seeds or fruits.
Now，a group of scientists and beekeepers are trying to find out what has happened.By examining bees' behavior and health，they hope to find out what has caused the bees' disappearance and to prevent bees from disappearing in the future.
Some people think the disappearance may be caused by disease.According to Dewey Caron，a researcher at the University of Delaware，the bees have signs of troubled immune systems (免疫系统)inside their bodies.But why would troubled immune systems cause bees to leave their hives？After all，when people are sick，they want to stay at home.Caron guesses that sick bees may have difficulty figuring out where their homes are.
“Another cause may be some chemicals (化学药品)that farmers use to kill unwanted insects on crops.” says Jerry Hayes，who works at the Florida Department of Agriculture.
5．The underlined part“this process” refers to ________.
B．bees' leaving their hives
C．bees' spreading pollen from flower to flower
D．beekeepers' raising bees
6．It can be inferred from the passage that ________.
A．the use of some chemicals is the cause of the bees disappearance
B．sick bees are not able to find where their hives are
C．it's not known yet why a lot of bees are leaving their hives and never returning
D．there will be no bees in America in the near future
7．What would be the best title for the passage?
B．Scientists Are Interested in Bees
C．Why Are Bees Leaving?
D．How Do Bees Send out Information?
8．The passage is most probably taken from ________.
B．a public advertisement
C．a book on advanced technology
D．a business report
Water goes around and around Earth in a never ending journey called the water cycle (循环). The sun heats up lakes, oceans, and other wet places on Earth. When the water gets warm enough, it changes into vapor. Plants also give off lots of water vapor (水蒸气). Some of this water vapor cools off high in the sky and becomes clouds. Then it falls back to Earth in a new place as rain or snow. This cycle happens over and over again.
The ground can absorb water like a sponge (海绵). If you could see this ground water, it wouldn’t look like a lake or river. The ground water is mixed in with the rocks and sand that lie in layers (层) below Earth’s surface.
Ground water moves along slowly. How slowly? Maybe 1.5 kilometers in one century. Some of this water has been underground for thousands of years. And once ground water is pumped out of the ground from a deep well (井) by people, it may take hundreds of years for another water to take its place.
48. In which order does water go around Earth ?
a. Fall down as rain or snow.
b. Heated up by the sun on lakes, oceans and other wet places.
c. Cool off high in the sky.
d. Form clouds.
e. Change into vapor.
A. dacbe B. becda C. caebd D. bceda
49. The ground water seems to _________.
A. be just on the ground B. be pure water like that in a lake or river
C. exist in rocks and sand D. flow along like rivers or streams
50. The underlined word “pumped” in the passage can be replaced by ___________.
A. run B. pushed C. drawn D. picked
There is a lake near a forest in Sweden. The water in the lake is very clear and everything is quiet and still. On the far side of the water is some farmland and further away, across the field, is an old church built on a hill. It has just stopped raining. The brook flowing into the lake is full and there is still some half melted snow from last winter on the ground.
The reason the water is so clear, and everything is so quiet and still, is that most of the plant and animal life in and around the lake is dead. There are no birds because all the fish and insects, which the birds need for food, have disappeared. Many trees in the forest are losing their leaves and bark, and are sick and dying. Others were blown down by the high winds of last winter. A farmer is working in a field planting something, but unless he plants a stronger kind of seed this year, the crop will be between 25 to 40 per cent lower than a few years ago. The stones of the old church tower are turning to powder and unless the tower is repaired soon, it will fall down.
All the death and destruction in this place is caused by the smoke coming out of factories and poisonous gases from cars and trucks. And yet this silent lake is hundreds of kilometers away from the nearest factory and highway.
1. Why are there no animals or birds in or around the lake?
A. The weather is terribly cold.
B. The lake is quiet.
C. The area is polluted.
D. They have all been killed.
2. The farmer has to plant a stronger kind of seed because ____________.
A. the soil becomes less and less.
B. few plants can grow because of the pollution.
C. the water in the lake can’t be used to irrigate the field.
D. the wind is strong.
3. What do you think is the best title of the passage?
A. A Beautiful Place of Interest.
B. A Polluted Place.
C. A Quiet Place in Sweden.
D. A Faraway Mountain Area.
For thousands of years, people thought of glass as something beautiful to look at. Only recently have they come to think of it as something to look through. Stores display their goods in large glass windows. Glass bottles and jars that hold food and drink allow us to see the contents. Glass is used to make eyeglasses, microscopes, telescopes, and many other extremely useful and necessary objects.
Until the Second World War, most of the glass used for optical(光学的) instruments was imported from Europe. However, during the war Americans could not get European glass, and they were forced to make their own. Therefore, new kinds of glasses were developed that had been previously unknown. These new effects were achieved by mixing other chemical elements with the sand. Some of these new glasses are very strong and can resist many kinds of shocks. Legend has it that a very hard glass was invented by a Roman who showed his discovery to the Emperor. When the Emperor saw the glass he feared that it would become more valuable than gold and sliver, making his treasure worthless. Therefore, he had the glassmaker killed, and the secret was not discovered again for hundreds of years.
In the present century, safety glass was invented for use in modern cars and planes. Safety glass is made by placing a layer of plastic between two layers of plate glass. When the outside layer of glass is broken, the pieces do not scatter(散开) and injure people. Some glass of the type is strong enough to resist bullets(子弹).
Although nowadays plastics have replaced glass under conditions where glass might be easily broken, there are new uses being developed, for the greatest advantage of glass is that its component(组成的) parts are inexpensive and can be found all over the world.
28. As time goes by, glass _________.
A. is regarded as transparent(透明的)
B. is used to make things look pleasant
C. is seen as more than decoration
D. is widely used to replace steel in making containers
29. Why did Americans make their own glass during the Second World War?
A. The war blocked the way of glass import.
B. The glass made in Europe was out of date.
C. They refused to use the European glass.
D. They were able to make a new kind of glass.
30. Why does the author tell us the legend?
A. To prove the Roman was the first inventor of hard glass.
B. To support the Americans were as clever as the Romans.
C. To give some information about hard glass.
D. To provide a historical event concerned with hard glass.
31. Why are new uses of glass being developed?
A. Because glass is not as safe as plastics.
B. Because glass is cheap and easily obtainable.
C. Because glass is not as strong and durable as plastics.
D. Because glass is more and more widely used.
A study of 27,000 men showed those skipping (不吃) breakfast were at a greater risk of heart problems. The British Heart Foundation said breakfast helped people resist (抵制) sugary snacks before lunch.
The men, aged 45-82, were studied for 16 years. During that time there were more than 1,500 heart attacks or cases of deadly heart failure. However, people who skipped breakfast were 27% more likely to have heart problems than those who started the day with a meal. The researchers took into consideration other lifestyle risk factors (因素) such as smoking and exercise.
Researcher Dr Leah Cahill told the BBC: “The take-home message is to eat in the morning when you wake up, preferably within an hour. The results show that something is better than nothing, but it’s always better to have something healthy and balanced.”
She said the timing of the meal seemed to be key and waiting until lunch rather than “having breakfast” may be straining (损伤) the body over time. This could be increasing the risk of high blood pressure and fatness which could in turn damage the heart. “Don’t skip breakfast,” Dr Cahill suggested.
Victoria Taylor, an expert with the British Heart Foundation, said: “These researchers only looked at men aged over 45, so we would need to see further research to prove that breakfast has the same effect on the heart health of other groups of people. What we do know is that a healthy breakfast can make that mid-morning biscuit less tempting, as well as giving you another opportunity to widen the variety of foods in your diet. Cereals (谷类食品) with low fat milk are a good way to start the day. Try a banana or dried fruit on top and you’ll be on your way to a fine day before you’ve even left the house.”
28. What does the text mainly deal with?
A. The effects of snacks on the health of the heart.
B. An interview by the BBC on people’s lifestyles.
C. What a healthy and balanced diet should contain.
D. The relationship between breakfast and a healthy heart.
29. Dr Leah Cahill’s suggestion is that we should _____.
A. fix the time for each meal we eat in a day
B. make sure our breakfast is always balanced
C. eat our breakfast immediately after getting up
D. have breakfast within an hour after waking up
30. The underlined word “tempting” in the last paragraph is closest in meaning to “_____”.
A. attractive B. valuable C. obvious D. familiar
31. According to Victoria Taylor, _____.
A. men over 45 are more likely to get heart diseases
B. fresh fruits like bananas are necessary for a healthy breakfast
C. it’s healthy to eat some biscuit between breakfast and lunch
D. the researchers should have covered other age groups in their study
A new study has discovered that meditation(冥想) and oxygen sport together reduce depression(抑郁).The Rutgers University study found that this mind and body combination,done twice a week for only two months,reduced the symptoms(症状)for a group of students by 40 percent.
“We are excited by the findings because we saw such a meaningful improvement in both clinically depressed and non—depressed students,”said lead author Dr. Brandon Alderman.“It is the first time that both of these two behavioral ways have been looked at together for dealing with depression.”
Researchers believe the two activities have an interactive effect in combating depression.Alderman and Dr. Tracey Shors discovered that a combination of mental and physical training(MAP)enabled students with major depressive disorder not to let problems or negative thoughts defeat them.
Rutgers researchers say those who participated in the study began with 30 minutes of focused attention meditation followed by 30 minutes of oxygen sport.They were told that if their thoughts drifted to the past or the future they should refocus on their breathing,enabling those with depression to accept moment-to-moment changes in attention.
Shors,who studies the production of new brain cells in the hippocampus—part of the brain involved in memory and learning—says scientists have shown in animal models that oxygen sport exercise keeps a large number of certain cells alive.
The idea for the human intervention(干预)came from her laboratory studies,she says,with the main goal of helping individuals acquire new skills so that they can learn to recover from stressful life events.
By learning to focus their attention and exercise,people who are fighting depression can acquire new learning skills that can help them process information and reduce the overwhelming recollection of memories from the past,Shors says.
“We know these treatments can be practiced over a lifetime and that they will be effective in improving mental health.”said Alderman.“The good news is that this intervention can be practiced by anyone at any time and at no cost.”
32.What made the research so different?
A.Adopting a way of meaningful talk.
B.Combining the two ways to treat depression.
C.Treating depression with special medicine.
D.Comparing the depressed with the non-depressed.
33.The underlined word“combating”in Paragraph 3 can be replaced by ______.
A.fighting B.identifying C.distinguishing D.examining
34.What did the participants do in the research?
A.They did oxygen sport half an hour before thinking.
B.They thought quietly and then took exercise.
C.They took exercise longer than they thought.
D.They took exercise while thinking quietly.
35.What is Shors’ main purpose of her studies?
A.To find out certain brain cells of humans.
B.To study the production of new brain cells.
C.To offer people a new method to treat stress.
D.To decide the links between stress and exercise.
A new study shows students who write notes by hand during lectures perform better on exams than those who use laptops.
Students are increasingly using laptops for note -taking because of speed and legibility(清晰度).But the research has found laptop users are less able to remember and apply the concepts they have been taught.
Researchers performed experiments that aimed to find out whether using a laptop increased the tendency to make notes"mindlessly"by talking down word which the professors said.
In the first experiment,students were given either a laptop or pen and paper.They listened to the same lectures and were told to use their usual note-taking skills.Thirty minutes after the talk,they were examined on their ability to remember facts and on how well they understood concepts.
The researchers found that laptop users took twice as many notes as those who wrote by hand.However,the typists performed worse at remembering and applying the concepts.Both groups scored similarly when it came to memorizing facts.
The researchers' report said,"While more notes are beneficial,if the notes are taken mindlessly,as is more likely the case on a laptop,the benefit disappears. "
In another experiment aimed at testing long-term memory,students took notes as before but were tested a week after the lecture.This time,the students who wrote notes by hand performed significantly better on the exam.
These two experiments suggest that handwritten notes are not only better for immediate learning and understanding,but that they also lead to superior revision in the future.
28.More and more students favor laptops for note-taking because they can______.
A.write more notes B.digest concepts better
C.get higher scores D.understand lecture better
29.While taking notes,laptop users tend to be______.
A.skillful B.tireless C.thoughtful D.mindless
30.The author of the passage aims to______.
A.examine the importance of long-term memory
B.stress the benefit of taking notes by hand
C.explain the process of taking notes
D.promote the use of laptops
31.The passage is likely to appear in_______.
A.a finance report B.a computer textbook
C.a science magazine D.a newspaper advertisement
Most people think about donating blood. However. Very few actually do it. According to experts, though almost 50% of the US population can be counted as potential blood donors, less than 10% ever give. What’s worse is that even the most consistent ones donate an average of just three to four times during their lifetime. The situation is similar worldwide. Now officials in Sweden are trying to change the situation with the help of modern-day technology.
The encouragement to donate again begins shortly after the donor leaves the hospital when he or she receives a "thank you" text. Though that certainly helps them feel appreciated, what is even more pleasing is the text they receive each time their blood is used to help someone in need.
Karolina Wiberg, the communications manager at the Stockholm blood service, believes this small gesture not only results in repeat donors, but helps bring in new ones. The program that was started in Stockholm has received such positive feedback that it is now being rolled out across the country.
However, Swedish officials are not stopping there. They are also encouraging local hospitals to show the exact levels of the different blood groups they have in stock at any given time on their websites. This allows potential donors to realize that their blood can make a difference in saving someone ' s life.
While all these programs are great, busy citizens, even the ones with the best intentions have to be occasionally reminded. In order to jog their memories, officials send them text, Facebook, and e-mail reminders. Though that may sound disturbing, the citizens do not seem to mind, given that the messages are light-hearted and fun - things like "We won't give up until you bleed."
Though Sweden is currently the only country using modern technology to urge more donations, don't be surprised if more join in, especially if the Nordic (北欧) country's blood banks start to overflow!
32. Why does the author give the example of the US?
A.To call on readers to donate blood.
B. To show blood donors are in need.
C. To show the coldness of Americans.
D. To prove the importance of blood donation.
33.The information shown on the websites of local hospitals aims to _______.
A. help donors know if their blood is used
B. encourage more people to donate blood
C. get rid of the worries of potential donors
D. let donors know how much blood is in stock
34. According to paragraph 5, busy people in Sweden _________.
A. can accept those fun messages
B. prefer text to e-mail reminders
C. find the messages rather boring
D. have no interest in the messages
35. What’ the author’s attitude towards Sweden’s measures?
A. Surprised. B. Curious.
C. Doubtful. D. Hopeful.
Sports can help you keep fit and get in touch with nature. However, whether you are on the mountains, in the waves, or on the grassland, you should be aware that your sport of choice might have great influence on the environment.
Some sports are resource-hungry. Golf, as you may know, eats up not only large areas of countryside, but also tons of water. Besides, all sorts of chemicals and huge amounts of energy are used to keep its courses（球场）in good condition. This causes major environmental effects. For example, in the dry regions of Portugal and Spain, golf is often held responsible for serious water shortage in some local areas.
There are many environment-friendly sports. Power walking is one of them that you could take up today. You don't need any special equipment except a good pair of shoes; and you don't have to worry about resources and your purse. Simple and free, power walking can also keep you fit. If you walk regularly, it will be good for your heart and bones. Experts say that 20 minutes of power walking daily can make you feel less anxious, sleep well and have better weight control.
Whatever sport you take up, you can make it greener by using environment-friendly equipment and buying products made from recycled materials. But the final goal should be "green gyms". They are better replacements（代替物）for traditional health clubs and modern sports centers. Members of green gyms play sports outdoors, in the countryside or other open spaces. There is no special requirement for you to start your membership. And best of all, it's free.
32. Which of the following is the author most probably in favor of?
A. Playing basketball in a gym B. Motor racing in the desert.
C. Cycling around a lake. D. Swimming in a sports center.
33. What do we know about golf from the passage?
A. It is popular in Portugal and Spain.
B. It needs water and electricity to keep its courses green.
C. It pollutes the earth with chemicals and wastes.
D. It causes water shortages around the world.
34. The author uses power walking as an example mainly because .
A. it uses fewer resources B. it improves our health
C. it is an outdoor sport D. it is recommended by experts
35. The author writes the passage to .
A. show us the function of major sports
B. encourage us to go in for green sports
C. discuss the major influence of popular sports
D. introduce different types of environment-friendly sports
For more than twenty years scientists have been searching for signs of life on other planets. Most of these searches have been done over the radio. The hope is that someone in outer space may be trying to get in touch with us. Scientists also have sent radio and television messages on spaceships traveling through space, on the chance that someone may be receptive（善于接受的）to such messages.
Scientists are using powerful radio telescope to listen to signals from about 1,000 stars, all within 100 light years of earth. In addition, they will scan （扫视）the entire sky to “listen”for radio messages from more distant stars. Using a computer, they will be able to monitor more than eight channels at one time. Scientists are looking for any signal that stands out from the background noise.
Of the 200 billion stars in the Milky Way galaxy（银河星系）, scientists find that five percent are like our sun. perhaps half of them have a planet like earth. Such a planet would be a reasonable distance from the star for temperatures to be right for the evolution of life. Based on the inhabitable（that can be lived in） planets in our galaxy, most scientists agree that chances are likely that one or more of these planets support some life.
However, many scientists wonder whether intelligent（有智力的）life exists on other planets. Some believe that twenty years of searching without any intelligible（可理解的）messages shows that no one is out there. They say that the evolution of intelligence compare able to ours is unlikely.
Other scientists believe that our search hasn’t been long enough to rule out the possibility that intelligent life exists in our galaxy. Although our sun family is only about five billion years old, our galaxy is about 20 billions years old. In that time, some scientists think it is likely that civilizations are much more advanced than ours. Perhaps these civilizations send us no signals: perhaps we have not recognized the signals they have sent us. If we hope to find intelligent life, these scientists believe that we have to keep looking.
28．According to the passage, how many planets in our galaxy might human beings live?
A．5 billion B．10 billion C．15 billion D．200 billion
29．The first paragraph in this passage is mainly about .
A．where scientists are looking for signs of life on other planets
B．why scientists are looking for signs of life on other planets
C．how scientists are looking for signs of life on other planets
D．when scientists are looking for signs of life on other planets
30．The underlined word“monitor,” in the passage means“ ”。
A．find B．block C．study D．check
31．Which of the statements is TRUE based on the information in the passage?
A．The earth is one of the oldest planets in our galaxy.
B．Most scientists believe that there is intelligent life on other planet.
C．Scientists don’t believe that there might be life on other planets.
D．Scientists are trying different ways to find signs of life on other planet.
Scientists are debating how to limit their newly-discovered power to change genetic
structure. Scientists already modify the genes of farm animals and agricultural plants to make
them more productive or stronger. But now they can also change genes in wild animals and
plants. These genes would continue into later generations. For example, it may be possible
for scientists to remove from existence the kind of mosquitoes that carry the Zika virus. They
might also be able to permanently remove species of plants and animals that are destructive to
In a report published last week, the U. S. National Academies of Sciences, Engineering
and Medicine (NAS) said it supports continued research on this kind of gene control. But it
warned that it is not possible to know what will happen when these changed plants and
animals are released into the wild.
Sixteen biologists, ethicists(伦理学家) and policymakers are on an NAS committee that
is examining the issue. They say that there is value to the new technology. But, they say,
there is not enough evidence to support the release of modified organisms (生物体) from the
laboratory into nature.
Many people would support stopping mosquitoes and rats from carrying diseases. But
scientists say we must understand the possible scientific, ethical, legal and social results of
such action before we decide whether to take it. Gene modification is spread through
Changed genes will continue to spread as long as an animal or plant continues to
reproduce. They cannot be limited to a farm or kept within a country's borders. Scientists are
wondering what may happen if a modified organism mates with another species. They are not
yet sure how the modified genes would affect the other species. It is possible that those genes
could harm those creatures or even lead to their disappearance from our planet.
32. What possible advantage does gene control in wild animals and plants have?
A. Changing the Zika virus permanently.
B. Removing the destructive species for ever.
C. Having changed genes in their next generations.
D. Making all the species more productive and stronger.
33. As for genetically changed wild animals and plants ,what are scientists worried about?
A. They may become weaker or die out.
B. They may be more productive.
C. They may cause damage to their living habitat.
D. Their genes may spread to later generations.
34. Which of the following is NOT true according to the passage?
A. Scientists are not sure what exact results gene modification leads to.
B. Scientists won't modify any genes before they make the final decision.
C. Gene modification has benefited some farm animals and agricultural plants.
D. Scientists have not applied gene modification to wild animals and plants in case of
35. What can be the best title for the passage?
A. Stop research on gene control
B. How to change genetic structure
C. Power and danger of gene control
D. Advantages of gene control in wild animals and plants
When introducing American universities, some of the first institutions（机构）to mention are the Ivy League schools. Originally, the Ivy League was an athletic conference made up of 8 private institutes of higher learning in northeastern United States. However, as time went on, these schools also became known for their excellence in academics besides athletics. Included in the Ivy League schools are Brown University, Columbia University, Cornell University, Dartmouth College, Princeton University, University of Pennsylvania, Yale University, and Harvard University. These 8 schools have been recognized as some of the best colleges and universities in the United States.
Harvard University is a private institution located in Cambridge, Massachusetts. The university includes a number of graduate and professional schools, as well as a college for undergraduates. In 2012, Harvard ranked number one in US News’ ranking of national universities again. Founded in 1636, Harvard is the oldest institute of higher education in the United States. It can be said that first there was Harvard, then the United States of America. Also, Harvard’s library contains the oldest collection of books in the United States as well as the largest private collection in the world. Harvard has also been described by Forbes Magazine as one of the “billionaire universities” as of their recent list of 469 billionaires, 50 received a degree from Harvard.
Harvard College (the institute for undergraduate students) is one of the most famous schools in the United States. It offers over 40 undergraduate fields of study, including astrophysics（天体物理学）, mathematics, neurobiology(神经生物学), etc. And the financial aid program there is amazing. Even though the tuition is about 37,576, and there are other expenses throughout the year, about 70% of undergraduate students received financial aid. Out of those students, over 90% of them had their full need met. And the policies for international students are the same for U.S. citizens.
Harvard College is very selective, as it only admits about 6% of their applicants. For admission into Harvard College, it is required that students take the SAT or the ACT, as well as 2 SAT Subject Tests. Harvard will also look at other factors during admission such as your application essay, high school transcript, work experience, GPA (Grade Point Average), your interview, recommendations, and most importantly, your character and personal qualities.
12. What are the Ivy League schools famous for?
A. Athletics and location.
B. Academics and history.
C. Financial aid and training.
D. Athletics and academics.
13. Harvard University includes .
A. a number of colleges for undergraduates
B. a kindergarten, middle school and college
C. many graduate and professional schools
D. only one college for graduates
14. Why is Harvard called one of the “billionaire universities”?
A. Because nearly one ninth billionaires once studied there.
B. Because people can earn a lot of money from Harvard.
C. Because there are 50 billionaires in Harvard University.
D. Because 469 billionaires contribute to Harvard University.
15. What can we learn from the passage?
A. 90% students in Harvard have their full need met.
B. Harvard College is the institute for graduate students.
C. A minority of undergraduates couldn’t receive financial aid.
D. The policies for international students differs from U.S. citizens.
Electrical devices (仪器) could soon use power made by human energy. Scientists say they have developed an experimental device that produces electricity from the physical movement of a person walking. British scientist Max Donelan and other scientists in Canada and the United States developed the device.
The device connects to a person's knee. As the person walks, the device captures energy each time the person slows down. To do this, the device helps with the slowing down movement of the leg. The movements of the walking person push parts of a small machine that produces electricity. Using the device, an adult walking quickly could produce thirteen watts of electricity in just a minute. Donelan says walking at that speed could produce enough power to operate a laptop computer for six minutes.
There are several possible uses for the device. Developers say it could help people who work in areas without electricity to operate small computers. The device could also be used in hospitals to operate heart pacemakers (起搏器). It could even be used to assist in the movement of robotic arms and legs.
The experimental version of the device weighs about one and a half kilograms, but it is too costly for most people to buy. But the researchers hope to make a lighter, less costly version. An improved version should be ready in one year.
The developers hope the device will one day help developing countries. Nearly twenty-five percent of people around the world live without electric power.
A similar product was invented in 2005 by Larry Rome of the University of Pennsylvania. He created a bag carried on a person's back that also produces power from walking. The knee device does not produce as much electricity as the bag. But the bag requires the walker to carry a load of twenty to thirty kilograms.
12. The second paragraph mainly talks about _______.
A. who developed the device
B. how the device works
C. several possible uses for the devices
D. how much electricity the device can produce
13. What is the disadvantage of the experimental version of the device?
A. It is too heavy for the walker to bear.
B. It is too complex for people to use.
C. It will slow down one's walking speed.
D. It is too expensive for most people to afford.
14. Compared with the device designed by Larry Rome, this new device _______.
A. produces power without adding more loads to the walker
B. can produce more power in a much shorter time
C. needs to be equipped with a battery
D. can help the walker walk faster
15. From the passage, we can learn that the electrical device can _______.
A. help housewives operate the micro-wave oven
B. make it much easier for us to go online
C. produce more electricity than that invented by Larry Rome
D. be applied in medicine to operate heart pacemakers