单项选择题

A lot of cities are trying new ways to treat garbage mainly because ______.

A．their environment is becoming more and more dirty
B．the traditional ways of treating wastes are not efficient
C．they are short of useful materials
D．they need new materials made from garbage
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单项选择题
Which of the following is NOT true
A．It's reported that lawyers are bad for the economy.
B．Lawyers have been called terrorists due to their explosive, random, and negative impact on the nation.
C．A five year moratorium on all civil litigation and locking down the law schools until the next century have been put into practice in America.
D．Lawyers gave a very negative impact upon the employee-employer relationship.
单项选择题
According to the author, many teenagers think they are brave enough to act on their own, but, in fact, most of them ______.
A．have much difficulty understanding each other
B．lack confidence
C．dare not cope with problems single-handed
D．are very much afraid of getting lost
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