A Wechat (微信) is an invention ______ can help people talk to friends, share photos, ideas and feeling freely.

       A. which     B. who     C. whose      D /


【答案】A 

【解析】考查定語從句。 which can help people talk to friends, share photos, ideas and feeling freely是定語從句，修飾先行詞invention，而先行詞是物，關(guān)系代詞用which或that。故選A。


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