When you look up into the sky at night, have you ever felt that your eyes are playing tricks on (捉弄) you? It seems that the stars are moving all the time.
Actually, there is nothing wrong with your eyes. This twinkling effect is called scintillation (交光). Scintillation happens because of air movements in the earth’s atmosphere (大气). Light is “bent (弯曲的)” when it travels through different parts of the earth’s atmosphere. As the air in the earth’s atmosphere is moving all the time, the light from the stars looks as if it is moving too.
The same thing also happens to things on the ground. On a very hot and shiny day, if you look at the road, the image in the distance is not clear and things move slightly. You can also see the same effect if you drop a rock into water. The rock appears a little unclear under the moving water.
This twinkling effect causes a lot of problems for astronomers (天文学家) since they cannot observe the stars clearly. A telescope (望远镜) was sent into space so that the air movements in the atmosphere could be avoided (避免). It took a long time to build the space telescope but finally in 1990, a huge space telescope called the Hubble Space Telescope was successfully sent into space. Since then, astronomers have many important observations that have helped people understand space better.
根据短文内容，选择最佳选项。 （10分）
【小题1】What happens to the light from the stars we see when the air in the earth’s atmosphere is moving?

— How about having a picnic in the park tomorrow?

— 　　　. We will if it’s sunny.

A. Yes, it does           B. Me too     C. It depends on the weather      

阅读下面的短文，并根据短文后的要求答题。

According to a new survey, students’ safety has become a big problem. Nearly 50% of students say they are worried about robbery on the way to and from school. Now in many big cities in China, some schools have taught an unusual lesson: self-protection. Students like this lesson because there are no exams or boring classes. And they can learn how to save lives and know how to stop danger before it really happens.

Chen Haoyu, a teacher at Beijing No. 25 Middle School, gives young students advice on how they should deal with danger.

If you are robbed

Keep calm. If you cannot cry for help or run away, give the robber your money. Try to remember what the robber looks like and tell the police later.

If you are in a traffic accident

If a car hurts you, you should remember the car number. If it is a bicycle, try to call your parents before you let the rider go. This is because you don’t know how seriously you are hurt.

If it is raining hard and there is lightning

Don’t stay in high places and stay away from trees.

When there is a fire

Get away as fast as you can. Put wet things on your body and try to find an exit. Do not take the lift.

If someone is drowning

If you can’t swim, don’t get into the water. Cry out for help.

Remember that danger is never as far away as you think. Take care of yourself at all times!

1.将文中划线句子翻译成汉语: 　　　　　　　　　　　　　　　　

根据短文内容回答问题。

2.Why do students like the self-protection lesson?  

3.How many suggestions for dealing with danger did Chen Haoyu give ? 

______________________________________________________________

4.What should you do when there is a fire?

   ____________________________________________________________________.

5.The best title for this passage might be　　　　　　　　　　　　　　　

We won’t go to the Great Wall if it ___________ the day after tomorrow.

完形填空（15分）
阅读下面短文, 掌握其大意，然后从各题所给的A、B、C、D四个选项中，选出最佳选项。
I stood in the doorway, watching my elder brother carefully putting clothes into his bag. I coughed uneasily. Finally 　　36　　 that I was there, Rocky turned towards me with a sad smile.
“I’m 　　37　　 tomorrow,” he said.
“I know.” My __38____ was almost a whisper. I was 　　39　　 at myself for being so weak, but I wasn’t about to cry.
“My 　　40　　 is early, so there is still 　　41　　 time to come to the airport,” he said. Seeing the 　　42　　 look on my face, he quickly added, “I promise I won’t leave without saying goodbye.”
I tried to say 　　43　　 , but didn’t. It’s always 　　44　　 to keep quiet if you’re about to cry. “You promised you wouldn’t cry,” he said to me, thinking that I was close to 　　45　　.
I remember the day he taught me how to ride a bike. 　　46　　 I thought he was always right behind me, holding the seat to keep me from 　　47　　. I was happy with this, but he knew he couldn’t hold me up all my life. He told me that one day he would have to let go.
His coughing stopped my thinking. What was left to say? How could I say 　　48　　 to the person who taught me everything?
The next morning I 　　49　　 , looked at my alarm clock, and realized he had left　50　 ago. We never even said goodbye.
Goodbye, Rocky! Although he may have been many miles away, I knew he heard me, even if it was only an answer in his heart.