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问题: 选择题

A genetic study of whales suggests many more ___________ slaughtered then believed in the whaling frenzy that began in the 18th century.

A. would be
B. be
C. have been
D. are
选哪个同志们?and why?

解答:

C. 过去的事情到目前,当然用完成时.
一项基因研究表明,自18世纪,可能比原先认为的更多的鲸鱼被鲸鱼加工厂杀掉了.