A. survival chances B. potential resources
C. unexpected benefits D. physical possessions
74. What makes it possible for humans to live on other planets?
A. O ur genetic makeup. B. Resources on the earth..
C. The adaptive ability of humans. D. By-products in space exploration.
75. Which of the statements can best sum un the passage?
A. Space exploration has created many wonders.
B. Space exploration provided the best value for money.
C. Space exploration may help us avoid potential problems on Earth.
解析:
71. 推理判断题。答案选C。文章是典型的议论说明文,是提出问题,分析问题的套路。第一段通过提出一系列关于太空探索利弊的问题引发讨论。并不是真的有这些怀疑,也没有鲜明的正反观点,所以AB不对。D偏差较远。
72. 主旨题。答案选A。第二段是典型的总分总结构,主旨句在段首段尾。Perhaps the best answer lies in our genetic makeup as human beings. 主要原因在于人类基因。Perhaps the best reason for exploring space is this genetic tendency to expand wherever possible. 而B选项错在fight这个词。CD没提及。
73. 词义猜测题。选C。根据spin off 前面的we have already benefited from other spin off 关键词 benefit,受益。而spin off后面的including 说的全是获得的利益,如improvements in earthquake prediction. 地震预测的进步等等,而不是什么生存机会,或者潜在资源。所以选C。
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