gwd 29-30 很弱地问

GWD-29-Q30

Biologists working in Spain say that their discovery of teeming life in a highly acidic river may not only broaden the search for life, or for evidence of past life, no other planets but also show that a number of forms of microscopic life can adapt to conditions that scientists have long thought hostile to all but the hardiest bacteria.

1. show that a number of forms of microscopic life can adapt to conditions that scientists have long thought hostile to all but the hardiest bacteria
2. may show that a number of forms of microscopic life is capable of adapting to conditions that scientists have long thought hostile to all bacteria but the hardiest ones
3. shows a number of forms of microscopic life to be capable to adapt to conditions that scientists have long thought had been hostile to all but the hardiest bacteria
4. showing that a number of forms of microscopic life is capable of adapting to conditions that scientists have long thought had been hostile to all but the hardiest bacteria
5. showing that a number of forms of microscopic life can adapt to conditions that scientists have long thought hostile to all bacteria but the hardiest

ANS:A

白痴地问一下主语是discovery，not only broaden,but also show, 这里show不是应该用shows吗？

personal opinion..

"not only... but also"  should always be parallel, therefore, u see "broaden" is infinitive without to, the word after "but also" also need to be infinitive without to.. its my way of choosing answer, just for emergency use ~~

谢谢，不过我是对这个单复数没有想明白，是不是我漏看了什么，简化后的句子是不是应该是the discovery not only broaden....but also show.....?

如果选的话肯定是a没错，但是不明白为什么这里不用单数the discovery not only broadens.....but also shows......?