【題目】—Are you free tomorrow afternoon?

—I'm afraid not. I'll have to ________ an important lecture given by a famous professor.

A. join

B. take part in

C. attend

D. enter

【答案】C

【解析】句意：——你明天下午有空嗎？——恐怕沒(méi)有。我要去參加一位著名教授做的重要的演講。attend參加演講、出席會(huì)議等。

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