【題目】－Doctor, ________ should I take this medicine?

－Twice a day.

A. what timeB. how muchC. how soonD. how often

【答案】D

【解析】

試題分析：句意：—醫(yī)生，我應(yīng)該多久吃一次藥呢！—一天兩次。what time幾點(diǎn)，問(wèn)時(shí)刻；how much多少，問(wèn)不可數(shù)名詞的數(shù)量或商品的價(jià)格；how soon多久以后；how often多久一次，問(wèn)頻率。根據(jù)回答，是在問(wèn)頻率，故選D。

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