143. 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 (C)

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

不明白E哪里不平行,

E not only able to transform…but they were also able to create不平行，

应该 scientists were not only able to transform….they were but also able to create….,但they were but also...太别扭了,不知道正确的形式应该是什么?请教了!感谢!

E not only able to transform…but they were also able to create不平行，

应该 scientists were not only able to transform….they were but also able to create….,但they were but also...太别扭了,不知道正确的形式应该是什么?请教了!感谢!

是(were able)not (only) to....but to ...

即, not...but...结构,

不是not only....but also...

问一下,1,not only...but also可以省略not only...but..(要求平行)

2,not only....but also中间打段或插入其他对不对?were not only able to transform the gas into a solid, but were also able to create..这样对吗?

似乎not only ... but also要求绝对的对称和平行，而not only ... but其实是它的简化版。后者我在

google上大概搜索到4750万个用法（不含also的网页而不是句子）

not only...but also 用在一个事物的两面性或者同时发生的两个事物上，但是这里不一样。大家翻译一下逻辑意思就知道，一个是固体，一个是半导体。有明显的递进含义，且我估计不能同时发生——这个请学物理的同学详解。  

所以是not... but ...，只不过多了个only修饰not。

还是那句话——GMAC太狡猾了。