请教一道弱弱的语法题T-3-Q7

T-3-Q7.
            

In Scotland, the number of wild salmon have been reduced because of uncontrolled deep-sea and coastal netting, by pollution, and by various other threats to the fish’s habitat.

A.      number of wild salmon have been reduced because of uncontrolled deep-sea and coastal netting

B.       number of wild salmon is reduced because deep-sea and coastal netting is not controlled

C.      numbers of wild salmon has been reduced because of uncontrolled deep-sea and coastal netting

D.      wild salmon’s numbers are reduced by deep-sea and coastal netting that is not controlled

E.       wild salmon’s numbers have been reduced by uncontrolled deep-sea and coastal netting

关于number 和 numbers 这个题的正确答案是E，可是，不是说表示数量应该用number 吗？到底怎么回事呢？

单数复数都看到过的，我估计都可以的。

所以在这情况下只能选择e了，其他几个选项都有更严重的问题。

恩，谢谢~~就是比较迷糊，感觉总结时还特意强调了一下不用复数的，看来ets还是把平行看的最重呢

本来觉得都已经明白的了，结果今天看og,发现og紫皮第五题上的解释是：

5．  A Labor Department study states that the numbers of women employed outside the home grew more than a thirty-five percent increase in the past decade and accounted for more than sixty-two percent of the total growth in the civilian work force

(A)  numbers of women employed outside the home grew by more than a thirty-five percent increase

(B)  numbers of women employed outside the home grew more than thirty-five percent

(C)  numbers of women employed outside the home were raised by more than thirty-five percent

(D)  number of women employed outside the home increased by more than thirty-five percent

(E)  number of women employed outside the home was raised by more than a thirty-five percent increase

Diction +Rhetorical construction

The sentence misuses the word numbers and contains the redundant word increase．The plural numbers means a large crowd or multitude，while the singular number refers to a specific quantity of individuals．The count of women here should be expressed as the number．The noun increase repeats the meaning already present in the verb grew；only one of the two words is necessary to the sentence．

A  Numbers should be number；grew and increase repeat the same idea．

B  Numbers should be the singular number．

C  Numbers should be number；the passive voice verb were raised by is unclear and wordy．

D  Correct．In this sentence，number correctly replaces numbers，and redundancy is eliminated with the use of the verb increased．

E   Passive voice verb were raised by is unclear and wordy；increase is redundant．

The correct answer is D．

有谁知道到底是怎么回事呢？