Anumberofanimals          killedandthenumberofthem     ...

问题详情：

A number of animals           killed and the number of them        getting    smaller and smaller.

   A. has been; are    B. has been; is    C. have been; is  D. have been; are

【回答】

C   a number of…“许多……；大量……”，作主语时谓语动词用复数；the number of…“……的数量”，作主语时谓语动词用单数。故C项正确。

知识点：主谓一致

题型：选择题