问题
选择题
If the machine should ______, call this number immediately.
A．break down
B．set out
C．put on
D．go up
答案
答案：A
本题考查对固定搭配的掌握。break down为固定搭配，指车、机器等出故障。
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If the machine should ______, call this number immediately.
A．break down
B．set out
C．put on
D．go up
答案：A
本题考查对固定搭配的掌握。break down为固定搭配，指车、机器等出故障。