【求助】885 20 19

nut728

19.As the etched lines on computer memory chips have become thinner and the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have vastly increased.
(A) the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have
(B) the chips’ circuits more complex, the power of both the chips and the electronic devices they drive has
(C) the chips’ circuits are more complex, both the power of the chips and the electronic devices they drive has
(D) their circuits are more complex, the power of both the chips and the electronic devices they drive have
(E) their circuits more complex, both the power of the chips and the electronic devices they drive have

想请教的是为什么B中the chips' circuits后可以省去are?

endless1989

我觉得是省去了have become吧，平行对称，剩下后似乎更简洁了

endless1989

考点主要在后面

wenchang

平行结构谓语动词相同时可以省略的，不过这里考点还不是这里，而是后面的power和increase的搭配

nut728

谢谢啦，现在很清楚了~~