If the elevator______, press this button and someone from the maintenance depart

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问题 If the elevator______, press this button and someone from the maintenance department will respond to the emergency as soon as possible.

选项 A、breaks down
B、stays in
C、turns out
D、calls up

答案 A

解析根据上下文语义，此处意为“电梯出故障时，按下按钮就会有人应答”，应选择意为“出故障”的动词短语，故(A)breaks down为正确答案。(B)stay in意为“留下”，(C)turn out意为“出现；变成”，(D)call up意为“唤醒；唤起”。

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