医学全在线每日一练免费为所有职称英语考生免费提供练习题，祝广大考生顺利通过2016年职称英语考试。
阅读理解：
Take the case of Eta Carinae,one of the most explosive stars in the universe.This star produces ultraviolet laser rays（紫外线)and it will destroy itself in a few million years' time.It is five times brighter than the sun and when it explodes it is going to be a sight worth waiting for!
The main idea of this paragraph is__________.
A.Power of the telescope
B.Details of Eta Carinae
C.Invention of a time machine
D.Biggest telescope
正确答案：B
答案解析：从Take the case of Eta Carinae"以Eta Carinae为例”可以看出，这句话主要讲的是一些关于船底星座的细节问题。因此选择B.
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