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单选题
If the machine should _____, call this number immediately.
A
put on
B
set out
C
break down
D
go up
参考答案
参考解析
解析：
本题考查词组辨析。句意：如果机器有故障，请立即拨打本电话。put on意为“穿上，戴上”；set out意为“出发，开始”；break down意为“坏掉，出故障”；go up意为“上升，攀升”。should用于条件句中表示可能发生的事。结合句意，正确答案为C。
本题考查词组辨析。句意：如果机器有故障，请立即拨打本电话。put on意为“穿上，戴上”；set out意为“出发，开始”；break down意为“坏掉，出故障”；go up意为“上升，攀升”。should用于条件句中表示可能发生的事。结合句意，正确答案为C。
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