Question

【题目】H7N9 bird flu is a virus can make people die. We’d better stay away from birds at present.

A. who B. which

C. what D. whom

Answer 1

【答案】B

【解析】试题分析：句意：H7N8禽流感是一种能致人死亡的病毒，我们现在最好远离禽类。who 谁，指人；which 引导定语从句，指物；what不引导定语从句；whom引导定语从句时，先行词是人，并且在从句中做宾语。这个定语从句的先行词是a virus，指物，故应选B。