新Prep cr2 76

medusa0901

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 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.

正确答案：E， 纠结：B
重点是：half the total yearly amount of hazardous waste
94年：90 pounds, last year: 40 pounds

谁能帮我分析分析B啊，B哪错了

huisang

94年是90 pounds per worker，last year 40 pound per worker，目标是降低总量的一半。
E取非削弱，如果去年worker的数量大量增加，那么per worker的量就会大量减少，但是总量可以保持不变。
B应该是无关~题目讨论的是amount of hazardous waste generated by its passenger-jet division，与生产了多少passenger jets木有关系~~

medusa0901

谢谢huisang啊
E的意思取非就是说虽然94年90pounds/per worker, 去年40pounds/per worker, 但是去年的工人比94年多，所以总垃圾量并没有减少一半是吧。

ccronaldo

对的 极端情况就是94年5个员工 去年100个员工 那么垃圾反而增多了 你说的B 缺少了一个逻辑链 就是把造飞机的数量和垃圾排放量连起来的链条 因此这只是楼主个人根据常识想当然的推断 这样的思考在逻辑题里面是不行的

medusa0901

对头~恩 O(∩_∩)O谢谢

ahasusanna

所以hazardous waste output是指有害废物在减少么