单项选择题

Laws recently introduced in some states have _________.

A．resulted in fewer serious accidents
B．reduced the number of convictions
C．specified the amount drivers can drink
D．prevented bars from serving drunken customers

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单项选择题

Drunken driving' has become a popular problem in America because _________.

A．accidents attract so much publicity
B．most Americans are heavy drinkers
C．drinking is a socially-accepted habit in America
D．Americans are now less shocked by road accidents