2020中考英语复习之阅读理解题及答案（二十）

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　　1. Unless e spend money to spot(认出，发现) and prevent asteroids(小行星) no, one might crash into Earth and destroy life as e kno it, say so scientists.

　　Asteroids are bigger versions of the teoroids(流星体) 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 hose orbits put them on a llision urse ith Earth.

　　But $500 million orth of ne telespes right no, then spend $10 million a year for the next 25 years to locate most of the space rocks. By the ti e spot a fatal one, the scientists say, e'll have a ay to change its urse.

　　Is it orth it? To things experts nsider hen judging any risk are (i) Ho likely the event is; (2) Ho bad the nsequences if the event ours. 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 ould be the end of the orld. "If e don't take care of these bid asteroids, they'll take care of us," says one scientist. "it's that simple."

　　The cure, though, might be orse than the disease. Do e really ant fleets(舰队，车队) of nuclear eapons sitting around on Earth? "the orld has less fear from doomsday(毁灭性) rocks than from a great nuclear fleet set against them." Said a Ne York Tis article.

　　1. What does the passage say about asteroids and teoroids?

　　A. They are heavenly bodies different in position.

　　B. They are heavenly bodies similar in nature.

　　C. They are more asteroids than teoroids.

　　D. Asteroids are more mysterious than teoroids.

　　2. What do scientists say about the llision of an asteroid ith Earth?

　　A. It is very unlikely but the danger exists.

　　B. Such a llision might our once every 25 years.

　　C. Collisions of smaller asteroids ith Earth our more often than expected.

　　D. It's still too early to say hether such a llision might our.

　　3. What do people think of the suggestion of using nuclear eapons to alter the urse 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 aste of money because a llision of asteroids ith Earth is very unlikely.

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

　　4. We can nclude from the passage that __

　　A. While pushing asteroids off urse nuclear eapons ould destroy the orld.

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

　　C. The orry about asteroids can be left to future generations since it is unlikely to happen in our lifeti.

　　D. Workable solutions still have to be found to prevent a llision of asteroids ith Earth.

　　5.. Which of the folloing best describes the author's tone in this passage?

　　A. Optimistic(乐观的) B.Critical(批评的) C. Objective(客观的) D. Arbitrary(武断的)

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