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    【題目】Learning how to repair motors takes a long time,________?

    A. doesn’t itB. don’t theyC. does itD. do they

    【答案】A

    【解析】

    考查反義疑問句。句意:學(xué)習(xí)如何修理馬達(dá)要花很長(zhǎng)時(shí)間,不是嗎? 根據(jù)上文Learning how to repair motors takes a long time陳述部分主語是動(dòng)詞-ing形式,反意疑問句的主語應(yīng)該用it。時(shí)態(tài)與上文保持一致為一般現(xiàn)在時(shí),故選A

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