题目内容
1.All passengers _____go through safety check before they take a plane.( )A. | can | B. | may | C. | must | D. | ought |
分析 句意:所有乘客在上飞机之前都要经过安检.
解答 can能,能够;may可以,可能;must必须,一定;Ought应该.故选C.
点评 can 可表示"可以,能够",即表示允许或者能力. may 也可表示"可以"的意思,表征求意见或允许.must可表示"必须"的意思.ought to应该.理解了,就能准确填空.
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