Do you still remember the year China became a member of WTO?A. thatB. whichC. when D. wha

问题补充：

Do you still remember the year China became a member of WTO?

A. that

B. which

C. when

D. what

答案：

A. that

B. which

(答案→)C. when

D. what

解析：考查定语从句。先行词为the year.定语从句的成分非常完整，主语是China，后面是一个系表结构，所以这里应该使用的是关系副词when。句意：你还记得中国成为WTO成员的那一年吗？