题目内容

14.According to aviation regulations,no passenger      carry cigarette lighters or knives on board.(  )
A.willB.shallC.needD.must

分析 根据航空条例,任何乘客不得携带打火机或刀具登机.

解答 答案:B 
A.will 用于肯定句中,表示意愿,决心等,"愿意"; B.shall用在陈述句中,主要用于第二、三人称,表示说话者的允诺、告诫、威胁、命令、规定、必然性等,;C.need 作情态动词用时,常用于疑问句、否定句中,"需要";D.must"必须";根据句中提到的"aviation regulations航空条例"可知,"no passenger      carry cigarette lighters or knives on board"表示规定性的内容,故选B.

点评 本题考查了情态动词的用法.要注意总结每个情态动词的意义及用法,然后结合句意,选出正确地答案.

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