Unless we spend money spotting and preventing asteroids(小行星) now, one might crash into Early and destroy life as we know it, say some scientists.

Asteroids are bigger versions of the meteoroids(流星) that race across the night sky. Most orbit the sun far from Earth and don’t threaten us. But there are also thousands of asteroids whose orbits put them on a collision course with Earth.

Buy $50 million worth of new telescopes right now. Then spend $10 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one, the scientists say, we’ll have a way to change its course.

Some scientists favor pushing asteroids off course with nuclear weapons.  But the cost wouldn’t be cheap. Is is worth it? Two things experts consider when judging any risk are: (1)How likely the event is; and (2) How bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike Earth once every 500 000 years. Sounds pretty rare-but if one did fall, it would be the end of the world. “If we don’t take care of these asteroids, they’ll take care of us,”says one scientist.  “It’s that simple.”

 The cure, though, might be worse than the disease. Do we really want fleets of nuclear weapons sitting around on Earth? “The world has less to fear from doomsday(世界末日) rocks than from a great nuclear fleet set against it,” said a New York Times article.

9.What does the passage say about asteroids and meteoroids?

A.They are heavenly bodies different in composition.

  B.They are heavenly bodies similar in nature.

C.There are more asteroids than meteoroids.

D.Asteroids are more mysterious than meteoroids.

10.What do scientists say about the collision of an asteroid with Earth?

A.It is very unlikely but the danger exists.

B.Such a collision might occur once every 25 years.

C.Coilisions of smaller asteroids with Earth occur more often than expected.

  D.lt’s still too early to say whether such a collision might occur.

11.What do people think of the suggestion of using nuclear weapons to alter the course of asteroids?

A.It sounds practical but it may not solve the problem.

B.It may create more problems than it might slove.

C.It is a waste of money because a collision of asteroids with Earth is very unlikely.

D.Further research should be done before it is proved applicable.

12.We can conclude from the passage that .      

A.while pushing asteroids off course nuclear weapons would destroy the world

B.asteroids racing across the night sky are likely to hit Earth in the near future

C.the worry about asteroids can be left to future generations since it is unlike to happen in our    lifetime.

D.workable solutions still have to be found to prevent a collision of asteroids with Earth

Unless we spend money to spot and prevent asteroids now，one might crash into Earth and destroy life as we know it，say some scientists.
Asteroids are bigger versions of the meteoroids(流星)that race across the night sky. Most orbit the sun far from Earth and don't threaten us. But there are also thousands whose orbits put them on a collision course with Earth.
Buy $ 50 million worth of new telescopes right now. Then spend $ 10 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one，the scientists say，we'll have a way to change its course.
Some scientists favor pushing asteroids off course with nuclear weapons. But the cost wouldn't be cheap. Is it worth it? Two things experts consider when judging any risk are: 1) How likely the event is; and 2) How bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike Earth once every 500,000 years. Sounds pretty rare-but if one did fall，it would be the end of the world. “If we don't take care of these big asteroids，they'll take care of us,” says one scientist. “It's that simple.”
The cure，though，might be worse than the disease. Do we really want fleets of nuclear weapons sitting around on Earth? “The world has less to fear from doomsday(毁灭性的) rocks than from a great nuclear fleet set against them，” said a New York Times article.
【小题1】What does the passage say about asteroids and meteoroids?

A．They are heavenly bodies different in composition.

B．They are heavenly bodies similar in nature.

C．There are more asteroids than meteoroids.

D．Asteroids are more mysterious than meteoroids.

　 Unless we spend money to spot and prevent asteroids(小行星) now, one might crash into Earth and destroy life as we know it , say some scientists.

　 Asteroids are bigger versions of the meteoroids(流星) that race across the night sky. Most orbit the sun far from Earth and don’t threaten us. But there are also thousands of asteroids whose orbits put them on a collision course with Earth.

　 Buy $ 50 million worth of new telescopes right now, Then spend $ 10 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one, the scientists say , we’ll have a way to change its course.

　 Some scientists favor pushing asteroids off course with nuclear weapons. But the cost wouldn’t be cheap.

　 Is it worth it? Two things experts consider when judging any risk are: 1) How likely the event is; 2) How bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike Earth once every 500 000 years. Sounds pretty rare-but if one did fall, it would be the end of the world. “ If we don’t take care of these big asteroids, they’ll take care of us,” says one scientist. “ It’s that simple.”

　 The cure, though , might be worse than the disease. Do we really want fleets of nuclear weapons sitting around on Earth? “The world has less to fear from doomsday(毁灭性的) rocks than from a great nuclear fleet set against them,” said a New York Times article.

1. What does the passage say about asteroids and meteoroids? _________.

A. They are heavenly bodies different in composition

B. They are heavenly bodies similar in nature

C. These are more asteroids than meteoroids

D. Asteroids are more mysterious than meteoroids

2. What do scientists say about the collision of an asteroid with Earth? _______.

A It is unlikely but the danger exists

B. Such a collision might occur once every 25 years

C. Collision of smaller asteroids with Earth occur more often than expected

D. It’s still too early to say whether such a collision might occur

3. What do people think of the suggestion of using nuclear weapons to alter the course of asteroids? _______.

　 A. It sounds practical but it may not solve the problem

　 B. It may create more problems than it might solve

　 C. It is a waste of money because a collision of asteroids with Earth is very unlikely

　 D. Further research should be done before it is proved applicable

4. We can conclude from the passage that________.

　 A. while pushing asteroids off course nuclear weapons would destroy the world

　 B. asteroids racing across the night sky are likely to hit Earth in the near future

　 C. the worry about asteroids can be left to future generations since it is unlikely to happen in our lifetime

　 D. workable solutions still have to be found to prevent a collision of asteroids with Earth

While taking a walk with the professor, who was commonly called the students’ friend, the young man saw lying beside the 16 a coat and a pair of old shoes, 17 ---- he supposed---- belonged to a 18 man who was working in the field nearby.

The student wanted to play a 19 on the man --- to hide his shoes and wait to see his20 when he cannot find them. 21 , the professor advised him never to 22 　himself at the cost of the poor and 23 him to put a coin in each shoe and watch how this would 24 him.

The student did so and they both 25 themselves behind bushes. The poor man soon finished his work, and came across the field to the path where he had26 his coat and shoes. 27 putting on his coat he put his foot into one of his shoes, but felt something 28 . He bent down to see what it was, and 29 a coin. He stared at the coin in surprise, turned it around, and looked at it 30 . Then he looked around, but no person was seen. He now put the money into his pocket, and began to31 the other shoe. His 32 was doubled on finding another coin. He fell upon his knees33 , looked up and uttered (说出) aloud a thanksgiving in which he spoke of his wife, sick and helpless, and his children without bread.

The student stood there 34 moved, and his eyes were filled with tears. It was not until then that he felt the true meaning of these words, which he35 understood before --- It is more blessed to give than to receive.

16. A. field　　 B. path　　　　　 C. woods　　　　　 D. grass

17. A which　　　 B. what　　　　　 C. when　　　　　　 D. that

18. A. rich　　　 B. strong　　　　 C. poor　　　　　 　D. tall

19. A. trick　　 B. part　　　　　 C. role　　　　　　 D. game

20. A. joy　　　 B. anxiety　　　　 C. fear　　　　　　 D. sadness

21. A. Besides　 B. Instead　　　　 C. Therefore　　　 D. However

22. A. praise　　 B. puzzle　　　　 C. please　　　　　 D. honor

23. A. ordered　 B. checked　　　　 C. promised　　　　 D. encouraged

24. A. suggest　 B. improve　　　　 C. affect　　　　　 D. wake

25. A. hid　　　 B. stood　　　　　 C. seated　　　　　 D. lay

26. A. forget　　 B. left　　 　　　C. lost　　　　　　 D. missed

27. A. Though　　　 B. Since　　　　 C. Unless　　　 D. While

28. A. new　　　　　 B. soft　　　　　 C. old　　　　　 D. hard

29. A. invented　　 B. received　　　 C. found　　　　 D. accepted

30. A. little by little　　B. again and again　　 C. sooner or later　　　 D. more or less

31. A. put up　　　 B. put down　　　 C. put on　　　　 D. put out

32. A. doubt　　　　 B. worry　　　　 C. surprise　　　 D. pity

33. A. excitedly　　 B. eagerly　　　 C. peacefully　　 D. miserably

34. A. slightly　　 B. deeply　　　　 C. weakly　　　　 D. highly

35. A. never　　　　 B. already　　　 C. still　　　　 D. ever