单项选择题

Americans are now taking steps to solve the problem of alcoholism by ______.

A．decreasing the amount of alcohol dnmk by drivers
B．teaching young students how to drive safely after drinking alcohol
C．punishing people more heavily for driving after drinking alcohol
D．giving special courses to teach doctors about new drugs and treatments for alcoholics

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单项选择题

The emergence of the mass media and of specialized periodicals showed that ______.

A．standards of literacy had declined
B．readers' interests had diversified
C．printing techniques had improved
D．educationalists' attitudes had changed

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 reading.