专四

单选题 Why are the two finds by Geoffrey Marcy and his colleagues remarkable?

A．Because scientists cannot figure out what they can be．
B．Because astronomers have never seen similar orbiting pattern and size before．
C．Because the planets are very huge．
D．Because the planets are far from our solar system．

参考答案：B进入在线模考
B。本题的出题点在列举说明处(the first…the second…)。根据题干信息词the two finds将答案锁定在文章第二段。第二段描述了最近的两个天文学发现：第一个发现涉及两颗行星，一颗30天公转一周，另一颗公转的时间正好是前一颗的两倍，人们从未发现过这样的位形；第二个发现是一个体积为木星17倍的行星，体积如此之大，以至没有人能说清它是什么，故8正确。

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1 By saying that our solar system "may be a cosmic oddball", the author suggests that

A．other stars have planets more or less like the one going around the sun
B．other stars have planets with bigger orbits
C．the way planets orbiting around the sun in our solar system is quite unique
D．planets in other systems have elongated orbits

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2 The case of the giant heavenly body implies that

A．it is either a star or a planet
B．it was formed like a star and orbits like a planet
C．it helps us change the definition of"planet"
D．it cannot be explained satisfactorily by conventional theory

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3 The best title for this passage could be __________

A．New Planetary Puzzlers
B．"Hot Jupiters" Challenging Conventional Theory
C．A Redefinition of"Planet"
D．Two Remarkable Finds

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