单项选择题

According to the passage, up to now, antidrug education ______.

A．has made all people see the danger of drugs
B．has succeeded in dissuading people from using drugs
C．has been effective only to a certain degree
D．has proved to be a total failure

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单项选择题

The film Reefer Madness mentioned in the passage ______.

A．effectively deterred marijuana use
B．was rejected by young marijuana users
C．did not picture the danger of marijuana realistically
D．was welcomed by marijuana users because it told them how to get high

单项选择题

The best title for the passage would be ______.

A．Are All Drugs Terrible for You.'
B．Do People Believe What Underground Papers Say
C．Is There an Increased Awareness of the Risks of Drugs
D．Can Persuasion Reduce Drug Abuse