单项选择题

In the United States today ______.

A．alcoholism is not a major social problem
B．there are no more than a million alcoholics
C．the problem of alcoholism costs thousands of millions of dollars every year
D．alcoholism has caused a million automobile accidents a year

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单项选择题

What is the writer of this passage attempting to do

A．Explain how present day reading habits developed.
B．Change people’s attitudes to reading.
C．Show how reading methods have improved.
D．Encourage the growth of readin

单项选择题

People decide to go on the wagon because ______.

A．they enjoy having one drink after another
B．they like the kind of drinks they get on the wagon
C．they are afraid of losing their self-control in drinking again
D．they are alcoholics and can not control themselves well