单项选择题

According to the author, the most important step in developing an effective campaign is ______.

A．to select the best possible media
B．to create a good environment
C．to collect some information
D．to define the objectives
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单项选择题
The only trouble with young drivers is that ______.
A．they are proud of their cars
B．they tend to own sports cars
C．they soon become like the older ones
D．they think they are on the battlefield
单项选择题
Road courtesy is good sense because ______.
A．it minimizes quarrels
B．it cuts down the number of drivers
C．most drivers will hit you if offended
D．most drivers never make acknowledgements
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