天山 3-7

ytrrew

In Scotland, the number of wild salmon have been reduced because of uncontrolled deepsea 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

MINE B

ANS E

WHY?

topway5

如果把A中的have been 改成has been就对了,是吧!

这个是过去完成时的被动语态, 所以B不对

sammen

B还有个错误，B中的中心词是number，是数字，数字的减少是XXXXX；E中是numbers 是数量，量的减少的原因是XXXX，有点区别的。还有就是because of，好像不如by来表方式好。