The bus ran over the cliff because its ____ failed.
The bus ran over the cliff because its ____ failed.
A、brakes
B、controls
C、gears
D、signals
【正确答案】:A
【题目解析】:公共汽车辗过悬崖,因为它的刹车失灵。A 刹车 B 控制器 C 装备 D 信号
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