单项选择题

A．They will have to take a different bus.
B．The trip is too dangerous.
C．They will have to wait.
D．There is a problem with the bus.
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单项选择题
Which of the following is NOT TRUE of loud music
A．It helped the subjects to brake sooner at the red light.
B．It helped the drivers to respond faster to objects in their central field of vision.
C．It helped the subjects to respond faster to objects in their peripheral vision.
D．It can produce more positive results than negative results for drivers.
单项选择题
Unlike hot dogs, hamburgers are a favorite picnic food.
A．Y
B．N
C．NG
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