题目内容
The main cause of HIV / AIDS infection in China is drug abuse, ______ is very serious in Yunnan.
A. what B. who C. that D. which
D
解析:
考查定语从句。which引导一个非限制性定语从句。原句出自China Daily。
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题目内容
The main cause of HIV / AIDS infection in China is drug abuse, ______ is very serious in Yunnan.
A. what B. who C. that D. which
D
考查定语从句。which引导一个非限制性定语从句。原句出自China Daily。