New theories propose that catastrophic impactsof asteroids and comets may have caused reversals in the Earth’s magneticfield, the onset of ice ages, splitting apart continents 80 millionyears ago, and great volcanic eruptions. (A) splitting apart continents (B) the splitting apart of continents (correct) (C) split apart continents (D) continents split apart (E) continents that were split apart
首先,楼主要明白,GMAT是5选1,但不代表正确的答案是最好的答案,这里可以用eruptions of volcanics,但是如果你科技类的文章看多了你就能知道
1)volcanic eruptions 可能是习惯用法;
2)这样最简洁,读者看得懂,作者写得快(写科技文章的geek多以快好省为原则)。
关于平行结构,A, B, C, and D. 最基本就是ABCD都是同样属性和语义,然后再考虑工整的问题,楼主有点本末倒置了。
.....have caused reversals, the onset, the splitting, and eruptions
如果这样写楼主看出来你所提到的泛指的问题点了吗?
reversals /eruptions 复数
onset /splitting 要么单数+a,要么复数,要么the
到底单复数还是the,就是语义和常识问题了。
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