求助 T9-Q27

菠萝蜜夭夭

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

正确答案A

通过research的主谓一致排除BDE，错选了C。
C错是为什么呀？因为by which还是not……but……不平行呢？

还有A为什么好呀？感觉the processes that produce and make it understandable 这个句式好奇怪呀？

大家都怎么想的呀？
谢谢各位NN~

菠萝蜜夭夭

没人咩

alzn2765

我也选C
A中produce没有宾语啊！虽然字典里produce有vi的解释，也做“生产”的意思，但是所有例句都是vt的。我也没见过produce后面没有宾语的时候。