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The greatest chance for the existence of extraterrestrial life is on a planet beyond our solar system. The Milky Way galaxy alon
The greatest chance for the existence of extraterrestrial life is on a planet beyond our solar system. The Milky Way galaxy alon
admin
2014-10-21
39
问题
The greatest chance for the existence of extraterrestrial life is on a planet beyond our solar system. The Milky Way galaxy alone contains 100 billion other suns, many of which could be accompanied by planets similar enough to Earth to make them suitable abodes of life. The statement above assumes which of the following?
选项
A、Living creatures on another planet would probably have the same appearance as those on Earth.
B、Life cannot exist on other planets in our solar system.
C、If the appropriate physical conditions exist, life is an inevitable consequence.
D、More than one of the suns in the galaxy is accompanied by an Earth-like planet.
E、It is likely that life on another planet would require conditions similar to those on Earth.
答案
E
解析
本题根据银河系中有许多恒星,这些恒星的行星具有与地球相似的环境从而得出了某个行星上可能存在生命的结论。要寻找结论所依赖的假设,就要从得出这个结论的比较入手。本题是从其他行星与地球环境相似,推出其他行星上有生命存在。由此很容易推出,本题的结论是以其他行星上生命的存在需要与地球相似的环境条件为前提,即(E)正确;(A)和(B)与题中内容无关;(C)与题中的假设无关,且“inevitable”为段落中所没有的绝对化语言,与段落中的“the greatest chance”不一致;(D)与题中结论无关。
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GMAT VERBAL题库GMAT分类
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