2017年成人高考专升本《英语》提升练习及答案（2）_第2页

　　Part II Cloze

　　In a telephone survey of more than 2,000 adults, 21% said they believed the sun revolved (旋转) around the earth. An __31__ 7% did not know which revolved around __32__ I have no doubt that __33__ all of these people were __34__ in school that the earth revolves around the sun; __35__ may even have written it __36__ a test. But they never __37__ their incorrect mental models of planetary (行星的) __38__ because their everyday observations didn’t support __39__ their teachers told them: People see the sun “moving” __40__ the sky as morning turns to night, and the earth seems stationary (静止的) __41__ that is happening.

　　Students can learn the right answers __42__ heart in class, and yet never combined them __43__ their working models of the world. The objectively correct answer the professor accepts and the __44__ personal understanding of the world can __45__ side by side, each unaffected by the other.

　　Outside of class, the student continues to sue the __46__ model because it has always worked well __47__ that circumstance. Unless professors address __48__ errors in students’ personal models of the world, students are not __49__ to replace them with the __50__ one.

　　31.A) excessive B) extra C) additional D) added(C)

　　32.A) what B) which C) that D) other(B)

　　33.A) virtually B) remarkably C) ideally D) preferably(A)

　　34.A) learned B) suggested C) taught D) advised(C)

　　35.A) those B) these C) who D) they(D)

　　36.A) on B) with C) under D) for(A)

　　37.A) formed B) altered C) believed D) thought(B)

　　38.A) operation B) position C) motion D) location(C)

　　39.A) how B) which C) that D) what(D)

　　40.A) around B) across C) on D) above(B)

　　41.A) since B) so C) while D) for(C)

　　42.A) to B) by C) in D) with(B)

　　43.A) with B) into C) to D) along(A)

　　44.A) adult’s B) teacher’s C) scientist’s D) student’s(D)

　　45.A) exist B) occur C) survive D) maintain(A)

　　46.A) private B) individual C) personal D) own(C)

　　47.A) in B) with C) on D) for(A)

　　48.A) general B) natural C) similar D) specific(D)

　　49.A) obliged B) likely C) probable D) partial(B)

　　50.A) perfect B) better C) reasonable D) correct(D)

　　Part III Reading Comprehension

　　Passage One

　　Questions 51 to 55 are based on the following passage.

　　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 re: 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.

　　51.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.(B)

　　52.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) Collisions of smaller asteroids with Earth occur more often than expected.

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

　　53.What do people think of the suggestion of using nuclear weapons to alter the courses 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.(B)

　　54.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(D)

　　55.Which of the following best describes the author’s tone in this passage?

　　A) Optimistic.

　　B) Critical.

　　C) Objective.

　　D) Arbitrary.(C)