In the solar system, collisions among the planets are among the m

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In the solar system, collisions among the planets are among the most _____ processes shaping surfaces: many a picture of the planets in it show that a proliferation of impact craters happened in the last 4 to 5 billion years.

A、cataclysmic
B、pervasive
C、misleading
D、clairvoyant
E、vivacious

答案：B

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