a question

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

解释: power—device ---à chip --- device powerà has B 由性质判断是否能并列

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.

我认为这里B也有问题啊,the chips’ circuits are more complex 才是正确的吧,have become thinner and the chips’ circuits are more complex 才能够并列啊！！！！！

B对的，并列的是...have become thinner and ... have become complex，第二个have becom可以省略的。

哦,这样哦,谢谢!!