亚洲人成影院在线播放高清|久久精品视频免费播放国产|日本亂倫近親相姦在线播放|国产九九免费观看思思

    <td id="rjvax"><strong id="rjvax"></strong></td>

    【題目】As Zhong Nanshan puts it, a surgical mask is enough _______ one uses it for daily protection.

    A.unlessB.beforeC.ifD.since

    【答案】C

    【解析】

    考查連詞詞義辨析。句意:正如鐘南山所說,如果僅用于日常保護的話, 醫(yī)用口罩就足夠了。A. unless除非;B. before在……之前;C. if如果;D. since自從,因為。結合語境可知,此處是條件狀語從句,故選C項。

    練習冊系列答案
    相關習題

    科目:高中英語 來源: 題型:

    【題目】I still can’t believe my eyes when I remember the scene ______ the best player should miss the pass.

    A.thatB.whenC.whereD.how

    查看答案和解析>>

    科目:高中英語 來源: 題型:

    【題目】Where is the science class being held?

    A.In the classroom.B.In the laboratory.C.In the library.

    查看答案和解析>>

    科目:高中英語 來源: 題型:

    【題目】Though sometimes he makes mistakes, we can’t doubt his loyalty _______ the company.

    A.inB.withC.ofD.to

    查看答案和解析>>

    科目:高中英語 來源: 題型:

    【題目】In the darkness we felt our way forward, trying to cross the stream _______ it was shallowest.

    A.in whichB.thatC.asD.where

    查看答案和解析>>

    科目:高中英語 來源: 題型:

    【題目】In this world there are only two tragedies. One is not getting _______ one wants, and the other is getting it.

    A.thatB.whatC.whichD.where

    查看答案和解析>>

    科目:高中英語 來源: 題型:

    【題目】Britain’s Prince Harry and his wife Meghan announced that they had broken away from the royal family, _______ hit the headlines around the world immediately.

    A.itB.thatC.whichD.where

    查看答案和解析>>

    科目:高中英語 來源: 題型:

    【題目】Free film tickets will be sent to _______ are interested in film.

    A.whomeverB.whoeverC.no matter whoD.whichever

    查看答案和解析>>

    科目:高中英語 來源: 題型:

    【題目】To learn English well, we should find chances to hear English ______ as much as we can.

    A.speakB.speakingC.spokenD.to speak

    查看答案和解析>>

    同步練習冊答案