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閱讀理解：
As far as astronomers（天文學家)can determine,the entire universe is built of the same matter.They have no reason to doubt that matter obeys the same laws in every part of the universe.Therefore,it is reasonable to guess that other stars,with their own planets,were born in the same way as our own solar system.What we know of life on earth suggests that life will arise wherever the proper conditions exist.
Astronomers believe that matter in different parts of the universe______.
A.obeys different laws.
B.obeys one common law.
C.obeys the same laws.
D.obeys no common law.
正確答案：C
答案解析：答題依據(jù)在本段的第二句�？茖W家沒有理由懷疑宇宙中的物質(zhì)遵循同一法則，即他們相信宇宙中不同地方的物質(zhì)是遵循同一法則的。
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