大全－d－13请教

dongchuang358

Since the passage of the state’s Clean Air Act ten years ago, the level of industrial pollutants in the air has fallen by an average of 18 percent. This suggests that the restrictions on industry embodied in the act have worked effectively. However, during the same period the state has also suffered through a period of economic decline. The number of businesses in the state has fallen by 10 percent, and the number of workers employed has fallen by 12 percent. It is probable that the business decline, rather than the regulations in the act, is responsible for at least half of the decline in the pollution.

13.   Which of the following, if true, would most seriously weaken the conclusion drawn in the passage above?

(A) During the last ten years, economic conditions in the nation as a whole have been worse than those within the state.

(B) Amendments to the Clean Air Act that were enacted six years ago have substantially strengthened its restrictions on industrial air pollution.

(C) Of the businesses that ceased operating in the state during the last ten years, only 5 percent were engaged in air-polluting industries.

(D) Several large corporations left the state during the last ten years partly in order to avoid compliance with the Clean Air Act.（C）

(E) Due to its small budget, the state office charged with enforcement of the Clean Air Act has prosecuted only two violators of the law since its passage.

答案是c。请问b为什么不是削弱，感觉是他因削弱呀？说明主要是法令发挥的作用，企业并没有发挥太大作用。而c虽然有5％的企业，但是这5％的企业有可能是污染很严重的企业，对环境的改善并没有特别大的作用呀？迷惑，请nn指教！！

dongchuang358

顶！！求教！！

littleshirley

B doesnt make sense at all.

dongchuang358

没明白，还请牛牛说得详细点！！谢谢！！

courtney8848

(B) Amendments to the Clean Air Act that were enacted six years ago
have substantially strengthened its restrictions on industrial air
pollution.像B這樣的籠統模糊地說“加強了對污染空氣的限制”的選就根本不要考慮。C說停業

的那些企業只是很少一部分﹐言下之意為根本起不到decline AIR pollution 的作

用﹐直接削弱了題目結論提出的他因﹕It is probable that the business decline﹐

rather than ~~~

littleshirley

要证明:不是经济衰落引起的环境改善,而更可能是立法

B说的是立法的力度, 单从这个角度说,是不能解释清楚问题的.

还是应该着眼于证明前半句话啊

驳斥一个观点用立论是不行地

lichabrend

up

yuzhimin_sh

I vote D. 

the 'Act' lead several large companies that do not compliance the 'Act' to leave the area, As a result,Pollution reduced. This alternative reason weaken the arguement business decline cause the Pollution reduction.

weakness of C is that 5% businesses are not related with how much pollution those businessed produced ,maybe 90% or maybe 9%

cissylightning

yuzhimin_sh 发表于 2008-8-29 16:34
I vote D.  the 'Act' lead several large companies that do not compliance the 'Act' to leave the ...

And the right answer is ? vote for D for the same reason