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.

请问答案为什么是E, 我没想通. thanks

谢谢leeon的解答, 可还是有些不明白.

题干说了一个现象: 自从1960年以来, teenage unemployment rate 一直上升.

题干对此现象的解释: minimum-wage 的存在导致了该现象.(没有指明minimum-wage 是上升还是不变的状态)

题干的结论: 如果降低minimum-wag, 则teenage unemployment rate 就不会再上升.

选项B: 即使minimum-wage 保持不变, teenage unemployment rate 一直上升的现象仍然存在.

我的困惑是: 我觉着选项B正是对题干的说明:minimum-wage 的存在(如不变), 导致了teenage unemployment rate 一直上升. 应该不是weaken, 而是属于类似背景知识说明之类.

晕(((

1。原文推理：

前提1：青少年经常给政府的最低工资踢出就业市场（最低工资经常是青少年失业的原因）

前提2：自从1960年，青少年失业率持续升高。

1，2前提结合成前提3：最低工资是1960年以来青少年失业率持续提高的原因

结论：（原文推理是从前提3推出结论）如果规定更低的最低工资，则失业率不会再增加。

B否定了前提3，既否定了推出结论的直接前提。所以WEAKEN结论。

2。三段论是指大小前提，原文不涉及三段论的问题。

太感谢lawyer了, 这回终于明白了! 你的这种分析方式很好, 我需要多学习.!

再次感谢两位!!!!!!献花!!!!!!!!