T-9-Q27. 大全987-606

Research during the past several decades on the nature of language and the processes that produce and make it understandable has revealed great complexity instead of underlying simplicity.

A.      that produce and make it understandable has revealed great complexity instead of underlying simplicity

B.       of producing and understanding it have revealed not underlying simplicity but great complexity

C.      by which it is produced and understood has revealed not underlying simplicity but great complexity

D.      by which it is produced and understood have revealed great complexity rather than underlying simplicity

E.       by which one produces and understands it have revealed great complexity instead of underlying simplicity

选B吧，对称，表达也比较简洁明了。

有没有谁能帮忙解决一下。谢谢。

it's not "B"

should use "has" rather than "have"

same as "D"

我本来也想选C，可既然答案是A，只能找A的理由。

这两个选项主要区别是processes的定于从句，A选项：the processes that produce and make it understandable 是说这个processes产生了语言并使语言可以被理解。C选项 the processes by which it is produced and understood ，是说语言被这个processes产生和理解，语言只能被人理解，不能被processes理解，逻辑不合理。所以选A。其他三个选项都可以通过主谓一致排除。

来看看牛人们的答案