[求助] GWD17-Q31 GWD17-Q40 为什么答案是这样，不理解

. GWD17-Q31:  ??

The agreement, the first to formally require industrialized countries to cut emissions of gases linked to global warming, is a formal protocol by which 38 industrialized countries must reduce emissions of these gases by 2012 or face heavy penalties.
            

A.      by which

B.      for which

C.      under which

D.      such that

E.       wherein

我选的是B 答案C

Contrary to financial analysts, who predicted last year that the market for home computers would dwindle, the personal computer industry continued to show strong growth in the first quarter of this year.
                    

A.      analysts, who predicted

B.      analysts, whose predictions

C.      analysts and their predictions

D.      analysts’ predicting

E.       analysts’ predictions

我选的是A 答案是E

C 我个人感觉是个固定的用法，我们翻译的时候理解为在这个条约之下   for which 意思不对了，形式没有错误。

第2题的话，contrary A to B 表示比较 A B 要是同类的事物 如果选A 那就变成了 analyst 和 personal computer industry 比了，  相关的句型是 Like A, B do  A B 要是同类的事物。比如： Like you ,I also need help.           

哦，谢谢