TestPrep一道题

liushiyou

American attitudes tend to be rather insular, but there is much we can learn from other countries. In Japan, for example, workers set aside some time each day to exercise, and many corporations provide elaborate exercise facilities for their employees. Few American corporations have such exercise programs. Studies have shown that the Japanese worker is more productive than the American worker. Thus it must be concluded that the productivity of American workers will lag behind their Japanese counterparts, until mandatory exercise programs are introduced.

The conclusion of the argument is valid if which one of the following is assumed?

(A) Even if exercise programs do not increase productivity, they will improve the American worker’s health.

(B) The productivity of all workers can be increased by exercise.

(C) Exercise is an essential factor in the Japanese worker’s superior productivity.

(D) American workers can adapt to the longer Japanese work week.

(E) American corporations don’t have the funds to build elaborate exercise facilities.
答案应该是哪个？

oddyuibe

is B the answer?

liushiyou

我选的是b，但给的答案是c。是不是和题目“The conclusion of the argument is valid if which one of the following is assumed? ”
中的valid有关啊？
只要使conclusion“valid”即可，而不是一定要使其“logically correct”？
liangqi能再具体解释一下吗？
谢谢！

StephanieYun

我觉得管卫东如果真的这样讲解和评论assumption题 ， 那么他就没有透彻理解这种题，或者是他的确这样讲过，但是还有其他上下文帮助理解才这样说。 反正我觉得这种讲法不够准确。
楼上说的官卫东的书是指哪本呢？  我没有管卫东的书，很遗憾，没能拜读这本奇书，却一直听到各位和其他考友评论和称道这本书。 楼上能否帮忙介绍一下或帮忙买买呢， 谢谢。

当然， 个人意见。 大家切磋吧。

愚以为assumption的确需要使结论必然成立。
这倒题，B错误在于all，但并不是因为all太绝对了，而是all的条件在这太强了，没有用! 因为没有B的条件下， 结论依然可以成立。所以B就不是答案。

反观C， 如果没有C条件， 那结论就不成立了。 所以C







愚见


生活是一杯清茶

liushiyou

谢谢大家！
1.我当时是考虑“c只是充分条件之一”,不一定使结论必然成立。但此题正确的思路应该是“只要是充分条件之一就ok”。我这么总结对吗？
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2.如果b改为：The productivity of workers IN THESE 2 COUNTRIES can be increased by exercise.可以选吗？
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3.“The conclusion of the argument is VALID if which one of the following is assumed? ”
和
“The conclusion of the argument is CORRECT if which one of the following is assumed?”
2种问法有区别吗？
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请指正！