Question

【题目】Travelers on planes carry knives because it is against the rules.

A.won'tB.couldn'tC.mustn'tD.needn't

Answer 1

【答案】C

【解析】

句意：飞机上的旅客禁止携带刀具，因为这是违反规定的。

考查情态动词辨析。won't将不会；couldn't不能；mustn't表禁止；needn't不需要，根据Travelers on planes和后面的carry knives because it is against the rules可知，应该是飞机上的旅客禁止携带刀具，故选C。