This is extremely dangerous work. If the wind direction changes at any time, these firefighters will put their lives________.

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问题 This is extremely dangerous work. If the wind direction changes at any time, these firefighters will put their lives________.

选项 A、in order
B、in favor
C、at risk
D、at hand

答案C

解析 考查词组辨析。at risk意为处境危险;有风险的;在危险中。故本题选C。
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