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【题目】You might be trapped in an elevator emergency, in _____ case you should stay calm and call for help.

A.thatB.whichC.whoseD.its

【答案】B

【解析】

考查定语从句。句意:你有可能被困于电梯的紧急事故中,在这种情况下,你应当保持镇定并呼救。本句中为非限制性定语从句,所设空处指代You might be trapped in an elevator emergency整句内容,且在定语从句中置于介词之后,因此用关系代词which,故选B

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