单项选择题

To encourage consumers to travel by train, DDB Needham emphasized

A．the freedom and convenience provided on trains
B．the practical aspects of travel
C．the adventurous aspects of train trips
D．the safety and cleanliness of train trips

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单项选择题

The American Association Foundation for Traffic Safety plans to

A．try out the Japanese method in certain areas
B．change the road signs across the country
C．replace straight, horizontal bars with chevrons
D．repeat the Japanese road patterns

单项选择题

The advantage of chevrons over straight, horizontal bars is that the former______ .

A．can keep drivers awake
B．can cut road accidents in half
C．will have a longer effect on drivers
D．will look more attractive