[求助]一道逻辑题

以下这题我做的和答案有出入,请问下大家觉得是B对还是E对?

In response to mounting public 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 manufacturers program has not met its goal are false.

B. At least as many passenger jets were produced by the division last year as had been produced 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.

我觉得还是b对，没做过这道题目，因为如果人数不变化，生产的少了，这个比较没有意义，和原题矛盾了就。

答案是B,但是我觉得不太讲得通啊.首先他这个program的goal是要降低有害物质排放的总量,跟生产量没有关系啊,因为goal里并没有规定降低有害物的同时不能减少生产量啊?只要有害物降低了就是达到了这个program 的goal了,就算生产量低了也不能说没有完成这个goal啊?题目里给出的是每个生产工人的平均有害物质排放量,答案E就用上了这个平均排放量,而B根本和工人平均排污量没有关系,是脱离这个题目给出的条件的.而且E很讲得通啊,因为现在的工人总数并不比1994年多很多,所以平均排放量少了则可推断出总排污量减少了.反之如果现在工人总数比94年多很多的话那虽然平均排放量少了但是总量可能并没变甚至还增多,所以E应该切中要害啊?E究竟哪里不对呢?

这个题目中比较的是pounds per production worker.而且原文说the goal of reducing by half the total yearly amount of hazardous waste generated by its passenger-jet division 这个goal实际上是达到了。所以总量下降，而平均量也下降，只能从人数的角度考虑咯。

不知道这么想对不对。

是啊,所以我选E,但是答案是B,我就觉得是不是答案错呢?他的题目问的是

Which of the following is an assumption on which the argument depends?

通过工人平均排污量的减少来证明总排污量的减少,显然他的假设就是总人数没有增加太多啊,不然减少的平均量其实都分摊到了更多人身上,总排污量还是没减少啊.

这个题目的问题是什么啊？

不好意思,问题忘贴了.

Which of the following is an assumption on which the argument depends?

对呀，如果production worker的数量明显增加，那么比较per production worker的数字就没有意义了

这个答案取非，明显weaken原文，所以是正确答案

那我觉得应该是E吧。

因为原文逻辑链是由两年的per production worker的比较来得出结论的.

所以E更能反映逻辑链的关系吧。

请教中……