Question

【题目】根据短文内容，选择正确答案。
B
Researchers have discovered the first Earth-sized planet. It was first marked by NASA's Kepler telescope(望远镜) so it's called Kepler-186f. It lies about 500 light years from Earth and goes around its star. The planet is the right distance from its star for water: not too close or not too far. Water is one important condition that scientists guess is necessary for life. So it could have water and possible life. It's called a true Earth cousin.
"This planet is an Earth cousin, not an Earth twin," said Barclay, who is among a team of scientists reporting on the discovery in the magazine Science this week.
"It's very exciting to find a planet similar to the Earth," Barclay said, "It's not easy work because things change as we get more measurements."
Scientists don't know anything about the air of Kepler-186f, but it will be a task for future telescopes which can study for chemicals that have something to do with life.
"It's possible for life to live in this planet, but that doesn't mean there is life in it," Barclay said.
So far, scientists have found nearly 1,800 planets in the universe.
"The past year has seen a lot of progress in the search for Earth-like planets. Kepler-186f is very important because it is the first planet that is the same temperature and is almost the same size as Earth," scientist David Charbonneau wrote in an email.
（1）Scientists have already found about _______ planets now.
A.500
B.186
C.1,800
D.1,801
（2）Which of the following about Kepler-186f is NOT true according to the passage?
A.It could have water and possible life, so perhaps we might live there.
B.It's almost as hot as and as large as Earth.
C.In the future, scientists will study the chemicals of it by telescope.
D.It's an Earth-like planet.
（3）We can probably read this article in _______.
A.a story book
B.a newspaper
C.a text book
D.a sport magazine
（4）Which of the following is the best title?
A.Space research.
B.Journey to space.
C.Is there water and possible life in Kepler-186f?
D.Scientists discover the most Earth﹣like planet.

Answer 1

【答案】
（1）C
（2）C
（3）B
（4）D
【解析】本文介绍一颗距离地球500光年的一颗与地球很相似的行星——开普勒-186f。
⑴细节理解。根据倒数第二段 So far, scientists have found nearly 1,800 planets in the universe.可知到目前为止科学家们已经发现了将近1800颗行星，故选C。
⑵细节理解。根据前三段可知开普勒-186f是一个类似于地球的行星，它距离他的恒星既不太近也不太远，它上面有可能有水有生命，所以它很像地球，故ABD均没问题。根据第四段but it will be a task for future telescopes which can study for chemicals that have something to do with life可知这是一个能够研究与生命相关的化学物质的未来望远镜的任务、而不是C选项的“将来，科学家们将用望远镜研究化学物质。”所以C错误。
⑶推理判断。这是一篇天文研究的发现，所以可能出现在报纸上。故选B。
⑷主旨大意。本文讲述发现了一颗跟地球很像的行星——开普勒-186f，并介绍对它的研究。故选D