大家帮忙看看这几道题，感激不尽！

sandyclause

1:  In the nation of Partoria, large trucks currently account for 6 percent of miles driven on Partoria's roads but are involved in 12 percent of all highway fatalities. The very largest trucks - those with three trailers - had less than a third of the accident rate of single and double triler trucks. Clearly, therefore, one way for Partoria to reduce highway deaths would be to require shippers to increase their use of triple-trailer trucks.
Which of the follow most seriously weakens the argument?
A: Partorian trucking copanies have so far used triple-trailer trucks on lightly traveled sections of major highways only.
B: No matter what changes Partoria makes in the regulation of trucking, it will have to keep some smaller roads off-limits to all large trucks.
C: Very few fatal collisions involving trucks in Partoria are collisions between two trucks.
D: in Partoria, the safety record of the trucking industry as a whole has improved slightly over the past ten years.
E: In aprtoria, the maximum legal payload of a triple-trailer truck is less than three-times the maximum legal payload of the largest of the single-trailer trucks.
答案是A

2: Industrialists from the country Distopia were accused of promoting the Distopian intervention in the Arcadian civil war merely to insure that the industrialists' facilities in Arcadia made substantial profits during the war. Yet this cannot be the motive since, as the Distopians foresaw, Distopia's federal expenses for the intervention were eight billion dollars, whereas during the war, profits from the Distopian industrialists' facilities in Arcadia totaled only four billion dollars.
Which of the following, if ture, exposes a serious flaw in the argument made in the second sentence above?
A) During the arcadian war, many Distopian industrialists with facilities located in Arcadia experienced a significant rise in productivity in their facilities located in DIstopia.
B) The largest proportion of Distopia's federal expenses is borne by those who receive no significant industrial profits.
C) Most Distopian industrialists' facilities located in Arcadia are expected to maintain the level of profits they achieved during the war.
D) Distopian industrialists' facilities in Arcadian made substantial profits before the events that trigered the civil war.
E) Many distopians expressed concern over the suffering that arcadians underwent during the civil war.
答案是B

alanuonuo

楼主公布下答案？A和B？

sandyclause

楼主公布下答案？A和B？

-- by 会员 alanuonuo (2010/8/10 1:19:53)

是的, 请问是怎么REASON 的呢?谢谢!!!!!!

alanuonuo

不好意思，我词汇量太小，可能解释不清楚，不过我试着说下大意吧。

第一题好像很多地方都有，说的是triple-trailer 的卡车出车祸的概率小，于是就说要把single and double triler 的卡车都换成triple的。要削弱的话，就得说出是什么特殊的条件使得triple-trailer 的事故率低，A给出了triple-trailer的卡车通常在车流量小的高速上行驶，那就是说如果triple-trailer的卡车也和其他两种一样在普通高速上行驶的话，事故率未必低。

第二题，更是大意啊，呵呵。argument说的是，联邦花费是8billion，但是profits from the Distopian industrialists' facilities in Arcadia 只有4billion，于是得出Industrialists不该被谴责战争宣传只是为了获利。如何消弱呢？如果8billion中很小的一部分是用在宣传上的话，4billion的产出就是很高的利润了。B就指出8billion的大部分用在了没有什么利润的地方，也就是其中很少是用在干涉战争的宣传上。

唉，水平实在有限，你先看看能不能明白吧。