Schools have been blamed for giving kids access to soda in vending machines (自动售货机). But new data suggest that school soft drink sales may not be an important factor in how much soda kids drink.

In the current issue of The Journal of Nutrition Education and Behavior, researchers compared soda consumption among nearly 500 students in Maine who attended seven schools over two school years. Four of the schools cut back on soft drink availability at the schools, while three of the schools made no changes.

All the students were drinking less soda by the end of the study period, but there were no meaningful differences in overall soft drink consumption among the different schools. The data suggest that limiting soft drink availability at school doesn’t result in meaningful changes in drink consumption patterns. While there were no changes in overall soda consumption, there was a notable shift in diet soda drinking among girls. If the school cut back on soda availability, girls were less likely to drink diet soda, compared to girls in schools that made no changes.

The data are the latest to suggest that schools may not play as big of a role in kids’ poor eating habits as widely believed. Last year, The American Journal of Public Health published a provocative (引起争论的) study showing that childhood weight problems often get worse in the summer, when kids are out of school.

Data from kindergarteners and first graders found that body mass index (指数) increased two to three times as fast in summer as during the regular school year. Minority children were especially at risk, as were children who were already overweight.

Even children who were too thin and needed to gain weight appeared to have better eating habits during the school year. They actually gained more weight while in school and less in the summer.

Even so, much of the focus on childhood nutrition and obesity (肥胖) remains in the nation’s schools. Today, The Times reported that even the school bake sale is disappearing as districts impose strict standards on the food served on school grounds.

76. What can be learned from The Journal of Nutrition Education and Behavior?

A. Soft drink remains a problem in schools.

B. Girls tend to consume less soda at school.

C. Soft drinks may not to be blame for eating problems.

D. Vending machines are not available in all schools.

77. Better eating habits may be best developed ______.

A. during summer                                    B. on schooldays

C. with less soda availability                      D. in attempts for weight-gain

78. The writer voices his opinion by ______.

A. conducting scientific research               B. comparing two journals

C. criticizing wrong beliefs                       D. referring to ready data

79. Which of the following can best summarize the passage?

A. Schools are to blame for kids’ nutrition problems.

B. Schools have made changes for a better reputation.

C. Kids’ poor eating habit has little to do with schools.

D. A lot has been done regarding kids’ nutrition and obesity.

Flu (which is short for influenza) is a highly infectious disease, the cause of which is a very tiny organism known as a virus. Several types of flu are recognized, depending on the type of virus that causes the disease.

Flu can often cause problems in breathing, and general infection of the lung. With elderly and weak people, these added complications often produce serious results. The virus, if not properly treated, can weaken the body so that patient may develop more serious illnesses, such as pneumonia and bronchitis. When people catch flu, they often complain of a headache or a sore throat. They usually have a fever and their temperature rises from the normal 37℃ (98.6) to about 39.5℃ (103). Sometimes a person has a dry hacking cough and aching joints.

Today many doctors use drugs that fight the disease. And scientists have also developed vaccines that help to prevent it. If the patient has proper treatment, and complete rest in bed, the virus is normally beaten within a week to ten days.

How does flu spread so quickly? When the infected person breathes out, sneezes or coughs, he gives out droplets of moisture in the breath from his mouth or nose. These remain in the air for some time. Flu viruses are present in these droplets. If a person sneezes in a crowd or poorly ventilated place, such as a lift, viruses can easily be carried from an infected person to a healthy person. This is known as droplet infection. The healthy person will breathe in the viruses given out by the infected person.

There are three main types of virus that cause flu, which are called type A, B and C. type A is the most powerful of the three, and undergoes minor changes in its genetic material every few years. The new form of the virus is called a strain. The new strain is not affected by the current vaccines. It is said to be “resistant” to them. So doctors must be continually producing new vaccines to combat the new strains of virus.

Watching a child struggle to breathe during as asthma (哮喘) attack is frightening for any parent. So it is only natural that most moms and dads will try just about anything, including spending a lot of money to keep an attack at bay. Trouble is, more than half of parents are trying strategies that simply do not work and wasting hundreds of dollars in the process.

According to Dr. Machael Cabana, a pediatrician at the University of Michigan’s C.S. Mott Children’s Hospital, who led the study, one of the most common mistakes was to buy mattress cover to protect against dust mites for a child whose asthma instead was made by plant pollen (花粉). Many of those parents then neglected to do what would have helped a lot more; shut the windows to keep pollen out. Another was using a humidifier for a child who was allergic to dust mites; a humidifier tends to be a place where dust mites like to breed. With those allergies, a dehumidifier works better.

Worst of all was the number of smokers with asthmatic children who didn’t even try to quit or at least limit themselves to smoking outdoors rather than just moving to another room or the garage. Many smoking parents purchased expensive air filters that have what Cabana called “ questionable utility. ”

Part of the problem, Dr. Caban and his colleagues believe, is that parents are bombarded by television ads that encourage them to buy products such as air and carpet fresheners, ionizers and other remedies that are often expensive but medically unnecessary. And doctors may not always take the time, or have the time, to explain to parents what will and won’t work in their child’s particular case. For example, allergies are usually a problem for older children with asthma, while kids 5 and younger more frequently have trouble with viral repiratory infections. So make sure you understand what the cause of your child’s asthma really is.

68．What can help the children who are asthmatic according to the passage?

A．Using a humildifier in the room instead of a dehumidfier.

B．Using air and carpet fresheners.

C．Buying a mattress cover to protect against dust mites.

D．Closing the windows to keep pollen out of the house.

69．Which sentence best explains why TV ads products bombard parents?

A．TV ads are obliged to make sure parents understand all terms of their introductory offers.

B．TV ads want to be sure that parents understand the benefits of very effective medical aids.

C．TV ads want parents to understand clearly the terms of their introductory offers.

D．TV ads want parents to be attracted to the benefits of introductory offers for their kid’s asthma.

70．The intended readers of the passage are ________.

A．teenagers              B．businessmen              C．parents            D．pediatricians

71．What can be inferred from the passage?

A．Therefore, please consult the doctors as soon as possible.

B．The best solutions are not always the most expensive ones.

C．It is never too late to cure the children’s asthma.

     What will we be eating in the future? Here are the top factors that will be affecting the food that ends up on our tables in the new century．

      Genetically engineered food Many crops are already genetically engineered，often to produce more food，fight against pests or improve nutrition But concern is growing over the lasting effects of changing nature．While existing research has found little harm in genetic，engineering，a recent study found the flower powder of a genetically engineered corn can kill the normal butterfly．This finding made many people nervous and brought attention to the topic．

    Dining out Americans are increasingly eating meals away from home，both in sit―down restaurants and in fast food outlets．In the 1ast decade alone there was a 14 percent decrease in the number of meals eaten at home．At the same time，restaurants are just beginning to really open their doors 0n the Internet．Websites exist to make restaurant reservations(预约)，view menus，and get tips from your favorite chefs．The dining Out trend and the demand for high-quality，chef-prepared food have encouraged chefs to spend time out of the．kitchen--teaching classes，appearing on TV，and writing cookbooks．

    Eating in Eating in doesn’t always mean cooking．Ready-made meals and frozen food sold in supermarkets taste better all the time．Restaurants are offering neatly packaged “food to go”，and meals can be ordered over the Internet．Cooking is not as much as a necessity，as it is a hobby，a special treat．Home cooks are looking to more than just mom’s food，and want to make food they try in restaurants．

      Agriculture Although American farmers have been hit hard recently by bad weather， low prices and decreasing government help，they can increase grain production not using old farm methods．

49．Which of the following is the main reason for genetically engineered crops?

    A．To lead to more food and better nutrition．

    B  To kill the normal butterfly．

    C．To reduce the harm done by insects．

    D  To change the nature of the crops．

50  From the passage，we learn that             ．

    A．eating out is not popular among the old people in USA

    B．it is now easier for people to get information about eating out

    C．it is popular for restaurants to send out information on the Internet

    D．the trend of eating out is causing many chefs to giye up their jobs

 51．In the future，cooking at home will probably          ．

    A．still be the job of most housewives

    B  take up most of people’s free time

    C  bring much joy to more people

    D  lead to many restaurants closing down

  52．According to the passage，farmers should         to get a higher grain production．

    A  turn to better farming methods

    B．ask for the support of the government

    C． raise the prices of crops

    D．not care about the effects of bad weather

I don’t think there is anything wrong with your blood. The key to your problem is that long nap (打盹，小睡) after dinner. If you didn’t sleep for hours during the early part of the evening, you would be more ready to sleep at bedtime. If you didn’t nap after dinner, you would not want to stay up so late, and you would not feel the need to take a sleeping pill. The pill is still working in your system when you get up in the morning. This helps account for the fact that you feel tired all day. You should get out of the habit of sleeping during the evening. Right after your evening meal, engage in some sort of physical activity―a sport such as bowling, perhaps. Or get together with friends for an evening of cards and conversation. Then go to bed at your usual time or a little earlier, and you should be able to get a good night’s rest without taking a pill.

If you can get into the habit of spending your evenings this way, I am sure you will feel less tired during the day. At first it may be hard for you to go to sleep without taking a pill. If so, get up and watch television or do some jobs around your house until you feel sleepy. If you fall asleep and then wake up a few hours later, get up by do not take a sleeping pill. Read a while or listen to the radio, and make yourself a few hours’ sleep that night, you will feel better in the morning than you usually feel after taking a pill. The next night you will be ready to sleep at an earlier hour.

The most important thing is to avoid taking that nap right after dinner and avoid taking pills.

36. This passage is written to someone who ________.

   A. has a terrible disease in his blood

   B. suffers from sleepless night and tired day

   C. can not fall asleep in the evening

   D. has no interest in playing with friends

37. According to the writer, it is difficult for the person to go to sleep because he ________.

   A. gets .the habit of staying up late           B. hasn’t taken sleeping pills

   C. sleeps for hours after dinner                D. fails to do some exercises

38. The author thinks the logical order of the following events should be ________.

a. feeling bad in the day                          b. taking sleeping pills

   c. unable to fall asleep at bedtime            d. napping after dinner

A. abcd               B. cbda               C. dcba            D. dbac

39. Which of the following is true according to the passage?

   A. Sleeping pills cannot help you get a good night’s sleep.

   B. You should stay up if you want to sleep peacefully.

   C. Food is necessary at night if you fail to go to sleep.

   D. Going to bed too early does not help you sleep well.

40. We may infer that the author is most probably a ________.

   A. doctor         B. scientist                 C. reporter          D. professors