大全-2-8. Teenagers are often priced out of the labor market by the
government-mandated minimum-wage level because employers cannot afford to pay
that much for extra help. Therefore, if Congress institutes a subminimum wage,
a new lower legal wage for teenagers, the teenage unemployment rate, which has
been rising since 1960, will no longer increase.
Which of the following, if true, would most weaken the argument above?
(A) Since 1960 the teenage unemployment rate has risen when the minimum wage
has risen.
(B) Since 1960 the teenage unemployment rate has risen even when the minimum
wage remained constant.
(C) Employers often hire extra help during holiday and warm weather seasons.
(D) The teenage unemployment rate rose more quickly in the 1970’s than it did
in the 1960’s.（B）
(E) The teenage unemployment rate has occasionally declined in the years since
1960.
我觉得答案b也不对啊,应该是说即使最低工资下降了,失业率还是保持不变才对啊.
大全-2-5. The city’s public transportation system should be removed from the
jurisdiction of the municipal government, which finds it politically
impossible either to raise fares or to institute cost-saving reductions in
service. If public transportation were handled by a private firm, profits
would be vigorously pursued, thereby eliminating the necessity for covering
operating costs with government funds.
The statements above best support the conclusion that
(A) the private firms that would handle public transportation would have
experience in the transportation industry
(B) political considerations would not prevent private firms from ensuring
that revenues cover operating costs
(C) private firms would receive government funding if it were needed to cover
operating costs
(D) the public would approve the cost-cutting actions taken by the private
firm（B）
(E) the municipal government would not be resigned to accumulating merely
enough income to cover costs
D为什么不对, B又为什么对?
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