If you look at the sky one night and see something moving and shining that you have never seen before, it might be a comet (彗星).

　　A comet sometimes looks like a star. Like a planet, a comet has no light of its own. It shines from the sunlight it reflects (反射). Like the earth, a comet goes round the sun, but on a much longer path (轨道) than the earth travels.

       If a comet isn’t a star, what is it then?

　   Some scientists think that a large part of a comet is water frozen into pieces of ice and mixed with iron and rock dust and perhaps a few big pieces of rock. When sunshine melts (融化) the ice in the comet, great clouds of gas go trailing after it. These clouds, together with the dust, form a long tail.Many people perhaps have seen a comet. However no one knows how many comets there are. There may be millions of comets, but only a few come close enough for us to see.

　　An Englishman named Edmund Halley, who lived from 1656 to 1742, found out a lot about the paths that comets take through the sky. Some comets move out of our sight and never come back. Others keep coming back at regular times. A big comet that keeps coming back was named after Halley because he was the one who worked out when it would come back again. Maybe you have ever seen Halley’s Comets because the last time it came close to the sun and the earth was in the year 1986. Then people all over the world were outside at night to look at it. You will probably be able to see Halley’s Comets when it comes near the earth again.

1.A comet is like ________.

A. sun      B. moon     C. sunlight    D. the earth

2.A large part of a comet is ______.

A. water and rock

B. water frozen into pieces of ice and mixed with iron

C. ice, iron and rock dust

D. only a few big pieces of rock

3.Maybe many people _______.

A. haven’t seen any comets      B. have seen all comets

C. have seen a comet at daytime  D. have seen a comet

4.Some comets keep coming back ________.

A. at any time  B. at noon  C. at regular times  D. at daytime

5.Halley’s Comets came back _____.

A. in 1990    B. in 1980     C. in 1986      D. in 1989

阅读下面短文，把方框中的句子还原到文中，然后完成第五小题。（每题1分，共5 分）

If you look at the sky one night and see something moving and shining that you have never seen before, it might be a comet (彗星).

　　A comet sometimes looks like a star.? ____1.____ It shines from the sunlight it reflects (反射). Like the earth, a comet goes round the sun, but on a much longer path (轨道) than the earth travels.

??? If a comet isn’t a star, what is it then?

　? Some scientists think that a large part of a comet is water frozen into pieces of ice and mixed with iron and rock dust and perhaps a few big pieces of rock. ____2.______ These clouds, together with the dust, form a long tail.

Many people perhaps have seen a comet. _____3._____ .There may be millions of comets, but only a few come close enough for us to see.

An Englishman named Edmund Halley, who lived from 1656 to 1742, found out a lot about the paths that comets take through the sky.? ______4.____? . Others keep coming back at regular times. A big comet that keeps coming back was named after Halley because he was the one who worked out when it would come back again. Maybe you have ever seen Halley’s Comets because the last time it came close to the sun and the earth was in the year 1986. Then people all over the world were outside at night to look at it. You will probably be able to see Halley’s Comets when it comes near the earth again.

A. However no one knows how many comets there are.

B. Some comets move out of our sight and never come

C. Like a planet, a comet has no light of its own.

D. When sunshine melts (融化) the ice in the comet, great clouds of gas go trailing after it.

5.Which of the following is not true?

A. A large part of a comet is ice, iron and rock dust

B. Some comets keep coming back at any time

C. Halley’s Comets came back in 1986

D. Maybe many people have seen a comet

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　　　　　　　　　　　　　　　

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!
【小题1】将文中划线句子翻译成汉语: 　　　　　　　　　　　　　　　　
根据短文内容回答问题。
【小题2】Why do students like the self-protection lesson?  
 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　
【小题3】How many suggestions for dealing with danger did Chen Haoyu give ? 
______________________________________________________________
【小题4】What should you do when there is a fire?
____________________________________________________________________.
【小题5】The best title for this passage might be　　　　　　　　　　　　　　　

　阅读短文，根据短文内容回答问题。
　　Making a TV show is a lot of fun. But it’s also a lot of work. So how do you make a TV show? One of the most important parts of a TV show is the set. Sets are where the stories happen. Sets can look like a room in a house, a restaurant, or even a jungle.
　　Would you ever want to act on TV? Being an actor on TV is fun. You can be famous and sign autographs. But it’s also a lot of work. If you don’t want to be an actor, there are other jobs you can do in a TV studio. You can be a director, or you can work with lighting or sound. Many people work together during filming to make sure the show looks good.
　　More people work on the TV show after it is filmed. They are editors. Editing a TV show means putting the different parts of the show together to make a whole show. When someone edits the show, they also add music or sound effects to make the show more interesting.
　　So what do you think? Would you ever want to work in a TV studio? It might be fun!
　　48. Is making TV show a lot of work?　
　　49. What are sets?　
　　50. Why do many people work together during filming?
　　51. Who work on the TV show after it is filmed?
　　52. What’s the work at a TV show like?