以下是引用tania在2005-9-11 13:06:00的发言: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. 应该选E,你给的答案是B
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。
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。
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