The young boy saw me, or rather, he saw the car and quickly ran up to me, eager to sell his bunches (串) of bananas and bags of peanuts. Though he appeared to be about twelve, he seemed to have already known the bitterness of life. "Banana 300 naira. Peanuts 200 naira"
He said in a low voice. I bargained him down to 200 total for the fruit and nuts. When he agreed, I handed him a 500 naira bill He didn't have change, so I told him not to worry.
He .said thanks and smiled a row of perfect teeth.
When, two weeks later, I saw the boy again, I was more aware of my position in a society where it's not that uncommon to see a little boy who should be in school standing on the corner selling fruit in the burning sun. My parents had raised me to be aware of the advantage we had been afforded and the responsibility it brought to us.
I pulled over and rolled down my window. He had a bunch of bananas and a bag of peanuts ready. I waved them away. “What's up”. I asked him. “I...I don't have money to buy books for school.” I reached into my pocket and handed him two fresh 500 naira bills.
"Will this help?” I asked. He looked around nervously before taking the money. One thousand naira was a lot of money to someone whose family probably made about 5,000 naira or less each year. "Thank you, sir," he said. 'Thank you very much.”
When driving home, I wondered if my little friend actually used the money for school-books. What if he's a cheat (骗子)? And then I wondered why I did it. Did I do it to make myself feel better? Was I using him? Later, I realized that I didn't know his name or the least bit about him, nor did I think to ask.
Over the next six months, I was busy working in a news agency in northern Nigeria. Sometime after I returned, I went out for a drive When I was about to pull over, the boy suddenly appeared by my window with a big smile ready on his face
" Long time."
"Are you in school now?”  I asked.
He nodded.
"That's good," I said. A silence fell as we looked at each other, and then I realized what he wanted. "Here," I held out a 500 naira bill. "Take this.” He shook his head and stepped back as if hurt. "What's wrong?” I asked. "It's a gift"
He shook his head again and brought his hand from behind his back. His face shine with sweat (汗水)。 He dropped a bunch of bananas and a bag of peanuts in the front seat before he said, "I've been waiting to give these to you."
72. What was the author's first impression of the boy?
A. He seemed to be poor and greedy.  
B. He seemed to have suffered a lot
C. He seemed younger than his age.  
D. He seemed good at bargaining
73. The second time the author met the boy, the boy________.
A. told him his purpose of selling fruit and nuts
B. wanted to express his thanks
C. asked him for money for his schoolbooks
D. tried to take advantage of him
74. Why did the author give his money to the boy?
A. Because he had enough money to do that.
B. Because he had learnt to help others since childhood.
C. Because he held a higher position in the society.
D. Because he had been asked by the news agency to do so.
75. Which of the following best describes the boy?
A. Brave and polite.         B. Kind and smart
C. Honest and thankful.       D. Shy and nervous.

Sleeping in on Saturday after a few weeks of too little shuteye may feel refreshing, but it can give a false sense of security.

New research shows long-term sleep loss cannot be cured that easily. Scientists researched the effects of short- and long-term sleep loss and found that those who suffer long-term sleep loss may function normally soon after waking up, but experience steadily slower reaction times as the day goes by, even if they had tried to catch up the previous night.

The research has important safety significances in an increasingly busy society, not just for shift-workers but for the roughly one in six Americans who regularly get six hours or less of sleep a night.

“We know that staying awake 24 hours without sleep will affect your performance to do all sorts of things, and this effect equals to drinking too much when driving,” said lead researcher Dr. Daniel Cohen of Boston’s Brigham and Women’s Hospital. But when those who suffer long-term sleep loss become all-nighters, “the harm is increased ten times,” Cohen said.

The National Institutes of Health says adults need seven hours to nine hours of sleep for good health. Regularly getting too little sleep increases the risk of health problems, including memory impairment and a weakened immune system. More immediately, too little sleep affects reaction times; sleepiness is to blame for car crashes and other accidents.

It has critically important complicated and unexpected results for anyone who works “crazy hours” and thinks they are performing fine with a few hours of weeknight sleep, said Harris, director at New York’s Montefiore Medical Center. “Don’t think you can just bank up your sleep on the weekend, because it doesn’t work that way,” he warned.

The text mainly advises people ______.

A. to sleep more time                          B. to sleep in on Saturday

C. to sleep scientifically                      D. to sleep little on weekend

People with long-term sleep loss ______.

A. are quicker in thinking                   B. may feel refreshed soon after waking up

C. are surely energetic                         D. can have a strong sense of security

What can we learn from the text?

A. Most of the Americans get six hours or less of sleep a night.

B. Staying up is worse for those who suffer long-term sleep loss.

C. Traffic accidents have little to do with sleepiness.

D. One in six Americans are all-nighters.

Which of the following is the immediate effect of long-term sleep loss?

A. Health problems                             B. Immune system

C. Reaction times                               D. Memory impairment

The underlined phrase “bank up” in the last paragraph most probably means ____.

A. pile up               B. pick up              C. add up                     D. build up

Never let your mind wander when driving, ______ a car crash is probable.

China_is_going_green. In order to reduce air pollution and oil­shortages, automobile manufacturers have announced their plans to develop hybrid vehicles (混合燃料汽车) for the Chinese market. Toyota's hybrid car Prius will be ready to drive in China this week. Let's have a look at the new car.
Any vehicle is a hybrid when it combines two or more sources of power. Hybrid cars run off a rechargeable battery and gasoline. Hybrid cars have special engines, which are smaller than traditional gasoline engines. They run at 99 percent of their power when the car is cruising (匀速行驶). A specially designed battery motor provides extra power for running up hills or when extra acceleration is needed.
Step into a Prius, and turn on the engine. The first thing you notice is how much quieter it is than a traditional car. At this point, the car's gasoline engine is dormant (休眠). The electric motor will provide power until the car reaches about 24 km/h. If you stay at a low speed, you are effectively driving an electric car, with no gasoline being used, and no waste gas gives off.
The onboard(车载的) computer makes the decision about when to use a gas engine, when to go electric, and when to use a combination of the two. If you go over 24 km/h, when you step on the gas pedal (油门), you are actually telling the computer how fast you want to go.
The electronic motor recharges automatically using a set of batteries. When driving at high speed, the gasoline engine not only powers the car, but also charges the batteries. Any time you use the brake, the electric motor in the wheels will work like a generator and produce electricity to recharge the batteries. As a consequence, the car's batteries will last for around 200,000 miles.
【小题1】The author writes this passage mainly to________.

The young boy saw me, or rather, he saw the car and quickly ran up to me ,eager to sell his bunches（串）of bananas and bags of peanuts. Though he appeared to be about twelve, he seemed to have already known he bitterness of life. “Bananas 300 naira. Peanuts 200 naira.” He said in a low voice. I bargained him down to 200 that for the fruit and nuts. When he agreed, I handed him a 500 naira bill. He didn’t have change. So I told him not to worry. He said thanks and smiled a row of perfect teeth.

When, two weeks later, I saw the boy again, I was more aware of my position in a society where it’s not that uncommon to see a little boy who should be in school standing on the corner selling fruit in the burning sun. My parents bad raised me to be aware of the advantage we had been afforded and the responsibility it brought to us.

I pulled over and rolled down my window, He had a bunch of bananas and a bag of peanuts ready. I waved them away. “What’s up?” asked him.

“I…I don’t have money to buy books for school.” I reached into my pocket and handed him two fresh 500 naira bills. “Will this help?” I asked. He looked around nervously before taking the money. One thousand naira was a lot of money to someone whose family probably made about 5,000 naira or less each year. “Thank you, sir.” he said. “Thank you very much!”

When driving home. I wondered if my little friend actually used the money for schoolbooks. What if he’s a cheat（骗子）?And then I wondered why I did it. Did I do it to make myself feel better? Was I using him? Later, I realized that I wondered why I did it, Did I do it to make myself feel better? Was I using him? Later, I realized that I didn’t know his name or the least bit about him, nor did I think to ask.

Over the next six months, I was busy working in a news agency in northern Nigeria. Sometime after I returned, I went out For a drive. When I was about to pull over, the boy suddenly appeared by my window with a big smile ready on his face.

“Oh, gosh! Long time.”

“Are you in school now?” I asked.

He nodded.

“That’s good,” I said. A silence fell as we looked at each other, and then I realized what he wanted. “Here,” I held out a 500 naira bill. “Take this.” He shook his head and stepped back as if hurt. “What’s wrong?”  I asked. “It’s a gift.”

He shook his head again and brought his had form behind his back. His face shone with sweat（汗水）. He dropped a bunch of bananas and a bag of peanuts in the front seat before he said, “I’ve been waiting to give these to you .”

1.What was the author’s first impression of the boy?

A. He seemed to be poor and greedy.

B. He seemed to have his age.

C. He seemed younger than his age.

D. He seemed good at bargaining.

2.The second time the author met the boy, the boy    .

A. told him his purpose of selling fruit and nuts

B. wanted to express his thanks

C. asked him for money for his schoolbooks

D. tried to take advantage of him

3.Why did the author give his money to the boy?

A. Because he had enough money to do that.

B. Because he had learnt to help others since childhood.

C. Because he held a higher position in the society.

D. Because he had been asked by the news agency to do so.

4.Which of the following best describes the boy?

A. Brave and polite.

B. Kind and smart.

C. Honest and thankful.

D. Shy and nervous.