Every mobile phone user worries about the battery life… Finally it’s here! The amazing mobile phone solar charger will make sure your phone never runs out of battery again.

Our solar chargers are suitable for most phones: iPhone, Blackberry, Samsung, HTC, OPPO and LG. Our solar chargers can also charge your iPad, MP3 / MP4 player, iPOD, camera,GPS and so on. They are supplied with a wide range of adaptors(转换插头), which are suitable for different kinds of devices.

Our chargers are light and small. They fit very easily into a pocket. You can use the power of the sun to charge your solar charger on sunny days, and if your charger needs power on dull days, it can be charged by your PC via its USB connection.

Our chargers store many hours of battery life depending on which model you choose. The higher the mAh (电池的容量单位) is, the more powerful the charger is. The solar charger is great for: heavy phone users, travelling, backpacking, camping trips, boating, long plane flights and saving energy (clean and environmentally friendly). It is perfect for charging in foreign countries — you may arrive at your overseas hotel destination and not be able to find a local adaptor.

Keep one for emergencies — it could save your life. What if you break down in the middle of nowhere and you have no battery to call for emergency help? Or when there is no power available?

If you won’t leave home without your phone, then don’t leave home without one of our solar charger.

iPhone Solar Charger — 1,900 mAh

Price: US＄37

Weight: 69g

Colour: Black

It stores the power until you use it.

Leather iPad Charger — 4,400 mAh

Price: US＄121

Weight: 400g

Colour: Red, black, white ＆pink

Hard Plastic Solar Charger — 1,600 mAh

Price: US＄51

Weight: 60g

Colour: Black

1. We can learn from the text that the solar chargers are suitable for             .

A. Apple devices only

B. mobile phones only

C. many devices including phones

D. batteries made of certain materials

2. The solar chargers             .

A. cannot be charged in the dark

B. are pocket-sized and energy-saving

C. can charge a phone faster than other chargers

D. don’t waste electricity while they’re not being used

3. What can we learn about the three types of solar chargers from the text?

A. The Leather iPad Charger has only one colour.

B. The Hard Plastic Solar Charger is the lightest.

C. The iPhone Solar Charger is the most expensive.

D. The iPhone Solar Charger can be charged while recharging a battery.

4. Which type of solar charger is the most powerful?

A. They are all equally powerful.

B. The iPhone Solar Charger.

C. The Leather iPad Charger.

D. The Hard Plastic Solar Charger.

Anyone who has ever played the game of Tetris (俄罗斯方块) knows the game’s surreal ability to spill into real life. After you shut off the game, you still see those Tetris blocks falling in your mind. You're grocery shopping and find yourself thinking about rearranging items on grocery shelves. Your mind continues to play the game, even when you're physically not.

Robert Stickgold, a Harvard professor, noticed something similar after a day hiking a mountain. That night, he dreamt he was still going through the motions of mountain hiking. Curious about this, he tried something: he got a group of college students of various skill levels to play Tetris and let them sleep in the Harvard sleep lab.

Over 60% of the students, including those who suffered from amnesia (键忘症)，reported dreams of images of Tetris pieces falling，rotating (旋转)，and fitting together. Interestingly, half the Tetris expert students reported such Tetris dreams, while 75% of the beginners did.

A study found that playing Tetris can grow your brain and make it more efficient. Adolescent girls played the game for an average of 1.5 hours a week over three months. The cerebral cortex (大脑皮层) of the girls grew thicker, while brain activity in other areas decreased. Richard Haier, who had found that there was a "Tetris learning effect", in which the brain consumed less energy as mastery of the game rose, concluded, "The brain is learning which areas not to use."

Haier's study showed that as the girls practiced playing the game, nerve cells made connections, communicating through synapses (a synapse is a connection between two nerve cells). When you learn something, you change those connections. Every time you reactivate(激活) a circuit, synaptic efficiency increases, and connections become more durable and easier to reactivate. Stickgold says sleep plays a role in this memory process.

So to sum up, whenever you do specific tasks over and over again, they take up less of your brain power over time. And that’s pretty amazing.

5. What does the underlined part ‘surreal ability’ in the first paragraph mean?

A. The game can help people arrange things in life.

B. The game can be applied to many aspects of life.

C. There are great similarities between the game and things in life.

D. The mind continues to play the game when we are doing other things.

6. What can we learn from Stickgold’s study?

A. More than half of the students dreamed of images of Tetris.

B. Students having bad memories didn’t dream of the game.

C. The Tetris expert students were more likely to dream of the game than the beginners.

D. More than half of the Tetris expert students didn’t dream of the game.

7. Playing Tetris for a long time can help_________.

①grow one’s brain

②one’s brain function efficiently

③arrange things tidily in life

④improve the adaptability of one’s brain

A. ①②③    B. ①②④

C. ②③④    D. ①③④

8. The purpose of the passage is to _________.

A. encourage people to play Tetris

B. warn people to focus while doing things

C. warn people not to play games before sleep

D. tell people they will improve at something if they keep doing it

This past Christmas season, I went to visit my parents. During the visit, l found the letters written by my parents to each other during the war in the attic (阁楼). The letters were piled high, dirty and had not been touched for decades. I asked mother and father if I could take the letters back to my home. They agreed.

As I opened each letter, all of them beautiful with age, I discovered a new page in this private part of my parents' lives. My father served in the army. His letters were full of frontline (前线) descriptions, and they continued all the way through the battle. Each of my mother's letters was sealed (密封) with her lipstick kiss. Father wrote that he sealed his return letters by rekissing her lipstick kiss. How they had been missing each other! I finished reading six months of the letters and discovered there were at least eleven months missing. Maybe they were lost forever.

Not long after our Christmas visit, Father became very ill and was in hospital. I went to the hospital to see him. As I sat by his bedside, he told me how much receiving those lipstick-kissed letters had meant to him when he had been so far from home.

Later that evening, Mother and I revisited the attic in search of the lost letters. Finally we dug them out of Mother’s old college trunk (皮箱). The next day was Valentine’s Day, and we went to the hospital. At my father's bedside, I showed him an old envelope. His curiosity was aroused. When he carefully opened the letter, he recognized it and his eyes were filled with tears. He read the love messages that had been delivered years before to my mother in a quavery (颤抖的) voice. This Valentine’s Day, we were lucky that we had everything.

9. Where did the writer find the missing letters?

A. In the hospital.    B. At her father's bedside.

C. In a trunk.    D. In her own house.

10. How did the writer’s father feel when he saw the letter?

A. Curious.    B. Touched.

C. Regretful.    D. Interested.

11. What would be the best title for the passage？

A. Christmas Gift    B. My Parents

C. Love letters    D. The Good Old Days

Flying devices called drones(无人机) may be one of the most important technologies of the future.

The number of jobs for people who know how to design, build and control them is increasing. Because of this increase, several U.S. universities have started offering degrees in unmanned aircraft systems, or UAS.

One of these universities is the University of Washington in Seattle. Ward Handley is seeking a master’s degree in UAS at the university. When the drone program first began, he did not think it was a good idea. “Drones can be used to invade privacy(侵犯隐私).” He said. But later, Handley changed his opinion. He said, “I think there are good enough purposes for them.”

The FAA (the part of the U.S. government that controls air travel and traffic) is creating new rules to control the use of drones, however. A new law requires drone owners to register(登记) their drones. People who do not register their drones could face fines of up to US＄20,000.

The new rules may also present problems for students. One problem is finding a legal place to fly.

Students at Blue Mountain Community College fly inside the college gym. In Seattle, University of Washington students test their drones in a big room.

Christopher Lum, a scientist at the University of Washington, helps students explore how drones can safely share the sky with regular aircraft. Lum explained why they test drones inside a building, “We need to register our aircraft and get permission to fly outside. That process can take months.”

At this time, Kansas State University is the only school with permission to offer unmanned aircraft flight classes to students outside. The FAA selected Kansas State University and 15 other universities to be part of a national research group.

Lum and some of his students recently moved their research to Australia. Australia has fewer rules limiting drones. A professor at Western Washington University also took his department’s drones to Canada for the same reason.

12. Degrees in UAS were created in several U.S. universities because of             .

A. the increasing interest in the field

B. the increasing employment opportunities

C. the support from the government

D. the development of this technology

13. Why didn’t Handley think the drone program was a good idea at first?

A. Drones can be used for bad purposes.

B. The use of drones was very limited.

C. Few people can benefit from the program.

D. The university didn’t attach great importance to the program.

14. According to Lum, why does he teach flight classes inside a building?

A. It’s safer for the students.

B. It’s very expensive to register the aircraft.

C. It takes a very long time to get official permission.

D. He hasn’t got permission from the university.

15. What can we infer from the last two paragraphs?

A. Australia is promoting the use of drones.

B. Kansas State University is the first to offer a UAS degree.

C. Australia has fewer rules than Canada to control the use of drones.

D. The U.S. has more rules than Canada to control the use of drones.

Generally, the skills and attitudes you form as a student will be especially important to your development. The following tips can help you become an active student.

Don’t be satisfied with yourself. ___16___ Leave no room for the average of the ordinary. If you can do good things, try hard to become better. If you have become better, try to become the best.

Give yourself new challenges. ___17___ Any new things will give you the chance to understand yourself better. You should try anything. What you learn from these activities can be useful in the future.

___18___ One reason why a student is not active may be that he has a defeated(挫败的) attitude. As much as possible, you should face each challenge with the willingness to succeed.

Think over your mistakes, if there are any. Being active doesn’t mean you will always be successful. ___19___ However, they will never succeed if they don’t realize the meaning of failure.

Keep a to-do list. This can serve as a reminder when a student becomes lazy. ___20___

A. To achieve this, you have to desire to become excellent.

B. Have strong faith that you will succeed.

C. Try to take an active part in group discussions.

D. Don’t be afraid to attend activities you wouldn’t normally do.

E. There are students who would give up the moment they fail.

F. You can’t be active if you don’t know what is going on.

G. It can keep you on the right track and help you organize your tasks for the day.