答案:B 第二段第一句“The discovery was part of an attempt to test theories about how stars and galaxies form.”说明了discovery是在理论检测过程当中作出的。
2.According to the astronomers,________.
A.the universe is changing its colour all the time
B.all the heavenly bodies are green at present
C.the universe has changed its colour several times
D.the universe will finally turn red
答案:D 第二段最后一句“They believe it will finally enter a‘red period' when the older,redder stars appear.”为该选项提供了依据。从第二段可看出宇宙的颜色由蓝到绿,最终将变而还会变红,所以C选项中的已经变了几次不符合事实。而all the heavenly bodies远远大于文中的stars这一范围。A选项中的all the time表示的频率过高。
3.We can infer that the most popular colour of Tshirts would be________.
A.red
B.blue
C.green
D.light green
答案:D 综合第一段第三句“What they found was that the average colour of the universe is a bit greener than turquoise(绿宝石)”和最后一段第一句“Perhaps colouroftheuniverse Tshirts or coffee cups could become popular.”可看出答案。4.Which of the following is NOT mentioned in the passage?
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