大全-2-8，没人问过

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.

(E) The teenage unemployment rate has occasionally declined in the years since 1960.

答案：B，不明白为什么。另外，D为什么不对？？？

题目说（结果）ＵＮＥＭＰＬＯＹＭＥＮＴ　ＲＡＴＥ　ＲＩＳＥＳ－－－＞（原因）ＭＩＮＩＭＵＭ　ＷＡＧＥ　高．

Ｂ是断桥意思是说上涨的ＵＮＥＭＰＬＯＹＭＥＮＴ　ＲＡＴＥ　和ＭＩＮＩＭＵＭ　ＷＡＧＥ　是没有什么关系的．

Ｄ是无关的选项，可以加强可以削弱．也可以不起任何的作用．７０和６０的比较没有意义～！

B说的是minimum wage不变的情况下，rate上升，仅这点怎么能说明minimum wage和rate无关呢？？？

而且题目说的是minimum wage下降的情况，还是不明白