作者：英吉
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
题目分析：A说宇宙始于一场大爆炸并且一直在扩张，用and连接的这个并列关系还是说的通的，留着。B中and后面说had been expanding，过去完成时就证明这个expand的动作应该是和前面的begun同时出来的，可是前面说的是ten to twenty billion years ago，用过去完成时显然不合适，干掉。C说宇宙的开始是一个大爆炸，意思不对，是宇宙起源起始于大爆炸而不是宇宙的开始是一个大爆炸，怎么读怎么别扭，干掉。而且后面的that has expanded，这个that指代的可能就是beginning了，意思也不对。D犯的错误和C一样，干掉。E说have begun与ten to twenty billion years ago这个时态不符，干掉。
