prep老1--147 not only...but also 请教高人解答~

cynthia627

147. (32726-!-item-!-188;#058&006292)

By pressing a tiny amount of nitrogen between two diamonds to a pressure of 25 million pounds per square inch, scientists not only were able to transform the gas into a solid, but they also created a semiconductor similar to silicon.

(A) not only were able to transform the gas into a solid, but they also created

(B) not only were able to transform the gas into a solid but also creating

(C) were able not only to transform the gas into a solid but to create

(D) were able not only to transform the gas into a solid but also creating

(E) were not only able to transform the gas into a solid, but they were also able to create

请教高人！这道题oma:C是没什么问题，但是为什么这里but also的also可以省略呢？在什么情况下，not only...but also的also可省呢？谢谢各位！！！

cynthia627

also可以省略的，这题直接用并列秒杀

-- by 会员 果汁软糖 (2009/11/30 22:15:35)

原来also可以省略……晕，我一直做题只要一看没有also就不看了……这道题，是其他的选项太不像样子了。印象里在阅读经常看到also省略就选了。我心里还纳闷呢，GMAT怎么这样啊。语法里错的，阅读和逻辑里就狂出现……唉……原来是我的问题……

果汁软糖

also可以省略的，这题直接用并列秒杀