Despite a whole night’s emergency treatment, the boy’s condition is still critical and his life is now hanging by a________.

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问题 Despite a whole night’s emergency treatment, the boy’s condition is still critical and his life is now hanging by a________.

选项 A、thread
B、cord
C、string
D、rope

答案A

解析 本题考查习惯用法。hang by a thread为习惯用语,表示“濒临失败、死亡或其他坏的结果”,用在句中表示“命悬一线”,故A项为答案。句意:尽管经过了一整夜的紧急抢救,男孩的情况仍然非常危险,如今命悬一线。
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