本文是一篇议论文,向我们阐述了人类进行太空探索的原因。人类的基因构成决定了人类探索其他领域包括太空的能力。人类探索太空可能暂时没有多大用处,但是在将来这可能会帮助人类生存下去。
1.Why does the author mention the questions in Paragraph 1?
A.To express his doubts. B.To compare different ideas.
C.To introduce points for discussion.D.To describe the conditions on Earth.
答案:C。推理判断题。作者在第一段提出问题目的是引出下面要讨论的话题。
.What is the reason for exploring space based on Paragraph 2?
A.Humans are natureborn to do so.
B.Humans have the tendency to fight.
C.Humans may find new sources of food.
D.Humans don't like to stay in the same place.
答案:A。细节理解题。根据第二段的第一句可知人类探索太空的原因是其基因的构成。
.The underlined word “spinoffs” in Paragraph 4 probably refers to ________.
A.survival chances B.potential resources
C.unexpected benefitsD.physical
possessions
答案:C。词义猜测题。后面所说的“improvements in earthquake prediction,in satellites for weather forecasting and in communications systems”可知此处的划线短语意为“益处,好处”。
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