In the solar system, collisions involving cosmic objects are among the most________processes shaping surfaces: images of many so

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问题 In the solar system, collisions involving cosmic objects are among the most________processes shaping surfaces: images of many solar system objects show a proliferation of impact craters formed throughout the past 4.5 billion years.

选项 A、cataclysmic
B、pervasive
C、misleading
D、uncontrollable
E、random

答案A

解析 同义重复题。逻辑连接标志是冒号,表示对前面内容的解释。前面说碰撞是shaping surfaces的最________的过程,冒号后面说图像显示a proliferation of impact craters。因此空格与a proliferation同义对应,表达“大量”的含义,B项pervasive(普遍的)最符合。很多同学会错选A项cataclysmic(灾难性的),这些星球上面没有生命的存在,所以无论撞击怎样都不算是灾难性的。
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