公共课考研英语英语2011考研英语模拟考场(演练版)(七)
题目内容

At the beginning of the text, the author indicates that______.

2024-07-12

A.comets are the most commonly seen astronomical bodies

B.comets, meteor fragments and the asteroids are mysterious

C.not much is known about comets

D.nothing do we know about comets except guesses

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