【題目】---_____ do most students use the Internet? ---Twice a week.

A. How soon B. How far C. How long D. How often

【答案】D

【解析】句意:——大多數(shù)學(xué)生多久使用一次網(wǎng)絡(luò)?——一周兩次。根據(jù)Twice a week可知此處對(duì)頻率提問,故用how often,故選D。

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