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.
(E) The teenage unemployment rate has occasionally declined in the years since 1960.
这题答案是B。为什么“minimum wage remained constant. 不变，同时teenage unemployment rate 上升”就可以削弱结论呢。
这说明ＵＮＥＭＰＬＯＹＭＥＮＴ ＲＡＴＥ 不光与ＭＩＮＩＭＵＭ ＲＡＴＥ 有关．可能还有其他的因素｀！（者属于它因削弱）
如果还是不明白，我可以举个例子：
ＧＭＡＴ成绩在申请ＭＢＡ中很重要一般都要过７００分，所以只要考过７００分就会申请成功．ＷＥＡＫＥＮ：有一个人考了７１０分，可是申请还是没有成功（可能是他的工作经验不足）．
不知楼主满意否？
请问楼主的这到ＸＤＦ的题是在哪里复制粘贴过来的？我也有些想问可没有电子版原题，只有书面版～！
谢谢。明白了。
这个都是在CD下载的。不过忘了在哪个页面了，我给你粘上来，你看行不行？
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