问题
选择题
China ______ the WTO for more than 10 years, and it has brought great changes to it.
A．has joined
B．has been in
C．has become a member of
D．has joined in
答案
答案：B
此题重点考查延续性动词的用法，因时间状语是段时间，故谓语动词要用延续性动词。join是非延续行动词，不能和段时间状语连用。