Emergency line operators _______ always stay calm and make sure that they get all the information they need to send help.


  1. A.
    can
  2. B.
    would
  3. C.
    must
  4. D.
    might
C
試題分析:can能,會;would將,意愿;must必須;might也許。句意:報警電話的接線員必須保持鎮(zhèn)靜并且確保他們得到的需要幫助的有關(guān)信息發(fā)出去。根據(jù)句意應(yīng)選C。
考點:考查情態(tài)動詞的用法。
點評:情態(tài)動詞是高中階段必須掌握的一個知識點,內(nèi)容多,需要考生注意它們的用法及區(qū)別。
即學(xué)即練:If you____go, at least wait till the rain stops.
A. can              B. would         C. must             D. might
解析:C 句意:如果你堅持要走,至少也要等雨停了再走。  
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