考前必看：2021年考研英语工学类阅读理解模拟题及答案（三十七）

发布时间：2020-10-12

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英语是考研初试当中比较拉分的科目，历来令不少考生又爱又恨。许多考生的英语都有很大的进步空间，因此英语该如何学就成为了众多考生关心的重点。想要学好英语，实战经验很重要。下面，51题库考试学习网为大家带来考研初试英语科目的一些模拟试题，正在备考的小伙伴赶紧练起来吧。

The discovery of planets around distant stars has become like space-shuttle launches-newsworthy but just barely. With some 50 extrasolar planets under their belt， astronomers have to announce something really strange to get anyone\'s attention.

Last week they did just that. Standing in front of colleagues and reporters at the American Astronomical Society\'s semiannual meeting in San Diego， the world\'s premier planet-hunting team-astronomer Geoffrey Marcy of the University of California， Berkeley， and his colleagues-presented not one but two remarkable finds. The first is a pair of planets， each about the mass of Jupiter， that whirl around their home star 15light years from Earth in perfect lockstep. One takes 30 days to complete an orbit， the other exactly twice as long. Nobody has ever seen such a configuration. But the second discovery is far stranger-a solar system 123 light-years away in the constellation Serpens， that harbors one “ordinary” planet and another so huge-17 times as massive as Jupiter-that nobody can quite figure out what it can be. It is， says Marcy， “a bit frightening”。

What\'s frightening is that these discoveries make it clear how little astronomers know about planets， and they add to the dawning realization that our solar system-and by implication Planet Earth-may be a cosmic oddball. For years theorists figured that other stars would have planets more or less like the ones going around the sun. But starting with the 1995 discovery of the first extrasolar planet-a gassy monster like Jupiter but orbiting seven times as close to its star as Mercury orbits around our sun-each new find has seemed stranger than the last. Searchers have found more “hot Jupiters” like that first discovery. These include huge planets that career around their stars not in circular orbits but in elongated ones; their gravity would send any Earthlike neighbors flying off into space. Says Princeton astronomer Scott Tremaine： “Not a single prediction for what we\'d find in other systems has turned out to correct.”

Last week\'s giant was the most unexpected discovery yet. Conventional theory suggests that it must have formed like a star， from a collapsing cloud of interstellar gas. Its smaller companion， only seven times Jupiter\'s mass， is almost certainly a planet， formed by the buildup of gas and dust left over from a star\'s formation. Yet the fact that these two orbs are so close together suggests to some theorists that they must have formed together-so maybe the bigger one is a planet after all.

Or maybe astronomers will have to rethink their definition of “planet”。 Just because we put heavenly objects into categories doesn\'t mean the distinctions are necessarily valid. And as Tremaine puts it， “When your classification schemes start breaking down， you know you\'re learning something exciting. This is wonderful stuff.”

注(1)：本文选自Time; 01/22/2001， p51;

注(2)：本文习题命题模仿对象：第1题模仿1998年Text5第1题;第2题模仿Text4第2题;第3题模仿1993年Text2第1题;第4题模仿1999年Text1第3题;第5题模仿1997年Text4第4题;

1. The author believes that .

[A] the discovery of planets is as important as the launch of space shuttles

[B] astronomers have been making a lot of discoveries of planets

[C] the public have no interest in astronomical discoveries

[D] there is little for astronomers to discover now

2. The two finds are remarkable in that .

[A] the planets are far from our solar system

[B] the sizes of the planets are too huge

[C] astronomers have never seen similar orbiting pattern and size before

[D] scientists can not figure out what they can be

3. By saying that our solar system “may be a cosmic oddball”， the author intends to render the idea that .

[A] other stars have planets more or less like the one going around the sun

[B] the orbits of extrasolar planets around their stars are elongated ones

[C] the way planets orbiting around the sun in our solar system is quite unique

[D] planets in other systems are generally huger than the ones in ours

4. The case of the giant heavenly body demonstrates that .

[A] conventional theory can not explain such astronomical phenomenon satisfactorily

[B] it is either a star or a planet

[C] it was formed like a star and orbits like a planet

[D] theorists give a wrong definition of “planet”

5. The best title for this passage could be .

[A] New Planetary Puzzlers

[B] Two Remarkable Finds

[C] A Redefinition of “Planet”

[D] “Hot Jupiters” Challenging Conventional Theory

答案：B C C A A

以上就是51题库考试学习网为大家带来的全部内容，希望能给大家一些帮助。51题库考试学习网提醒：在最后阶段，调整自己的心态也是非常重要的，每年都有考生临考前放弃，所以小伙伴们要注意不要给自己太大的压力哦。另外，小伙伴们如果还有其他关于考研信息的疑问，也可以留言咨询哦。

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下面小编为大家准备了 研究生入学 的相关考题，供大家学习参考。

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