2. 考研
  3. The author refers to the ocean bottom as a "frontier" in the first sentence because it______. The author mentions outer space i

The author refers to the ocean bottom as a "frontier" in the first sentence because it______. The author mentions outer space i

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问题 The author refers to the ocean bottom as a "frontier" in the first sentence because it______.
The author mentions outer space in the first paragraph because______.
选项 A、the Earth’s climate millions of years ago was similar to conditions in outer space
B、it is similar to the ocean floor in being alien to the human environment
C、rock formations in outer space are similar to those found on the ocean floor
D、techniques used by scientists to explore outer space were similar to those used in ocean exploration
答案B
解析 第一段最后一句话的意思是：海底一片黑暗，压力比地球表面大上百倍，是人无法进入的区域，在某些方面像空旷的外层空间一样难以进入、遥远。
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