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天山-3-16
Q16:
In response to mounting pubic concern, an airplane manufacturer implemented a program with the well-publicized goal of reducing by half the total yearly amount of hazardous waste generated by its passenger-jet division. When the program began in 1994, the division’s hazardous waste output was 90 pounds per production worker; last year it was 40 pounds per production worker. Clearly, therefore, charges that the manufacturer’s program has not met its goal are false.
Which of the following is an assumption on which the argument depends?
A. The amount of nonhazardous waste generated each year by the passenger-jet division has not increased significantly since 1994.
B. At least as many passenger jets were produced by the division last year as had been produced in 1994.
C. Since 1994, other divisions in the company have achieved reductions in hazardous waste output that are at least equal to that achieved in the passenger-jet division.
D. The average number of weekly hours per production worker in the passenger-jet division was not significantly greater last year than it was in 1994.
E. The number of production workers assigned to the passenger-jet division was not significantly less in 1994 than it was last year.
不同意的。这题选B的。这题主要为了证明passenger jet division减废是否成功。那么B就是最好的解释。如果生产jet的数量和以前一样,每个工人的产废减少,那么division的减废计划是成功的。(文中没有说jet多,废物多,没有给出这两者的关系,所以我觉得jet的数量和废物的产生无关)jet多hazard多那是肯定的,不用说的,非常常识,这个我想不应该去争辩的。不可能反过来的,生产多jet不可能比原来hazard还小,我们要证明的就是是否hazard在同样jet生产量下,现在的比以前产出少点的hazard,但是注意,还是产出hazard的。
E不能证明division的计划成功。因为,如果工人数一样,生产Jet的量大量减少的话,那么每人产出的harzard自然也少。所以无法判断division的减废是否成功。所以E错。 我觉得要记得看最后一句结论,Clearly, therefore, charges that the manufacturer’s program has not met its goal are false. 这句是要证明的东西。为了证明这句,只有B是正确的。
不同意,原文中提出goal:reducing by half the total yearly amount of hazardous waste ,这是一个总量的概念,得出这个结论的原因是in 1994, the division’s hazardous waste output was 90 pounds per production worker; last year it was 40 pounds per production worker.这是一个人均的概念。这两者之间是有一个gap的,就是人数。
高量部分都对,但是你高量部分成立的前提是,生产jet量和以前一样多,否则都不能比较。把B取非,jet生产量少了,人多的话,人均hazard很少,人少的话,hazard可多可少,看人少到什么情况。所以B取非后,减废program是否成功无法比较的。
E取非,人数大量增加,按你说的总量给出了,那么我们可以知道人均产出hazard是减少的,和program是否有效没有关系的。是人数造成的原因。所以E不能证明减废的program是否有效,因而错误。 |