成人英语三级

单选题 To make up an objective test, the teacher writes a series of questions, __________ has only one correct answer.

A.each of which
B.some of which
C.which
D.what

参考答案:A进入在线模考
【参考译文】为了组织一场客观的测试,老师写了一系列问题,每个问题只有一个正确的答案。
【答案解析】本题考查定语从句的用法。非限制性定语从句中which这个关系代词代指前面的a series of questions,形式也对,但句子谓语用的是has,是单数,如果用which的话后面的谓语动词就要用have。each of which,“这些问题中的每一个”,故A正确。