GRE Text Completion: JiJing 1373-GRE填空机经1373题 - B4BNIL78GZ686U5BA

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