The widely accepted big bang theory holds that the universe began in an explosive instant ten to twenty billion years ago and has been expanding ever since.
8. The widely accepted big bang theory holds that the universe began in an explosive instant ten to twenty billion years ago and has been expanding ever since.
(A)that the universe began in an explosive instant ten to twenty billion years ago and has been expanding
(B)that the universe had begun in an explosive instant ten to twenty billion years ago and had been expanding
(C)that the beginning of the universe was an explosive instant ten to twenty billion years ago that has expanded (D)the beginning of the universe to have been an explosive instant ten to twenty billion years ago that is expanding
(E)the universe to have begun in an explosive instant ten to twenty billion years ago and has been expanding
这个句子描述了宇宙的形成和发展:形成于一次爆炸,从那次爆炸以后就不断地在扩张。因此,动词begin应该用一般过去式began,expand应该用过去完成进行时has been expanding,BCDE都没有使用正确的动词时态,使得句子产生歧义。 C选项的that has expanded描述的是instant, 逻辑错误。 D选项的that is expanding暗示beginning在expanding,逻辑错误。