题目内容

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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