[求助]885-section A-20

20.   Studies of circadian rhythms can be applied to problems ranging from chronic insomnia in frequent transcontinental air travelers to workers in all-night plants being inefficient.

(A) to workers in all-night plants being inefficient

(B) toward workers in all-night plants being inefficient

(C) to workers in all-night plants who are inefficient

(D) to combat worker inefficiency in all-night plants（E）

(E) to decreased efficiency among workers in all-night plants

为什么不选C？range from X to Y,X和Y一致？

E是什么意思？

有大牛可以解释一下吗？

谢谢！

答案是E吧？

我觉得重要的是

range from... to....

from与to后面的性质应该是平行的。

早上一起来再看这道题目，一下子想通了，奇怪当初怎么会想不通。简单的平行关系：chronic insomnia 对应decreased efficiency ，in frequent transcontinental air travelers 对应among workers in all-night plants，结构对应。

谢谢顾风！