题目内容
16．Several traffic accidents have happened recently．If drivers are careful enough，mostaccidents ．（ ）
| A． | can prevent | B． | can be prevented | ||
| C． | need prevent | D． | will prevent |
分析 最近发生了几起交通事故，如果司机们都很小心的话，大多数事故是可以阻止的．
解答 答案：B．考查情态动词及被动语态．句意"最近发生了几起交通事故，如果司机们都很小心的话，大多数事故是可以阻止的"．Accidents"事故"是prevent"阻止"，这一动作的承受者，该用被动语态．而含有情态动词的被动语态形式是"情态动词+be+实义动词的过去分词"，所以选B．
点评 考查情态动词及被动语态．结构是情态动词+be+动词的过去分词．要结合语境选择合适用法．
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