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15.We welcome you to use this area for your baby buggy(童车).However,________ a wheelchair user board the bus,you are not supposed to use this special area.(  )
A.wouldB.mightC.shouldD.could

分析 句意:我们欢迎你的童车使用该区域,然而,万一一位轮椅使用者上车,你就不应该用这个特殊区域.

解答 答案C."would"表示意愿或过去习惯性的动作;"might"可能;"should"应该,竟然,万一;"could"可能,可能.根据句意:我们欢迎你的童车使用该区域,然而,"万一"一位轮椅使用者上车,你就不应该用这个特殊区域.故选C.

点评 本题考查情态动词,要掌握词意并结合具体的语境选择出正确的选项.

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