[求助]2道逻辑题

冲凉猿人

1.  Recent estimates predict that between 1982 and 1995 the greatest increase in the number of people emplyed will be in the category of low-paying service occupations. This category, however, will not increase its share of total employment, whereas the category of high-paying service occupations  will increase its share.

If the estimates above are accurate, which of the following conclusions can be drawn?

A. In 1982 more people were working in low-paying service occupations than were in high-paying service occupations .

B. In 1995 more people were working in high-paying service occupations than were in low-paying service occupations .

C. Nonservice occupations will account for the same share of total employment in 1995 as in 1982.

D. Many of the people who were working in low-paying service occupations in 1982 will be working in high-paying service occupations by 1995.

E. The rate of groeth for low-paying service occupations will be greater than the overall rate of employment growth between 1982 and 1995.

Answer: A

2.  Seven countries have signed a treaty binding each of them to perform sepecified actions on a certain fixed date, with the actions of each conditional on simultaneous actions taken by the other countries. Each country was also to notify the six other coiuntries when it conpleted its action.

This simultaneous-action provision of the treaty leaves open the possibility that

A. the compliance of the date was subject to postponement, according to the terms of the treaty.

B. one the countried might not be reqiured to make any changes or take any step in order to comply with the treaty, whereas all the other countries are so required.

C. each country might have a well-founded excuse, based on the provision, for its own lack of compliance.

D. the treaty specified that the signal for one of the countries to initiate action was notificaition by other countries that they had complete action.

E. there was ambiguity with respect to the date after which all actions contemplated in the treaty are to be completed.

Answer: C

请各位指教！！！万分感谢~！！！

jillgu

第一道题：

低收入雇用者虽然人数增量很大，但是就业占有份额还是很低，说明其弹性系数较小，基数大。

而想法高收入雇用者基数较小。故选A

zijing4546

第一题,还是不明白,如果82年前10个人工作,2个低薪,8个高薪,根据题意,低薪增长量最大,假设又多出3个人去干低薪,多出两个人去干高薪,2+3/10+5=1/3 原来是2/10=1/5 occupation share怎么可能不增加呢???????? 请大家帮忙解个惑.

gonghao

"如果82年前10个人工作,2个低薪,8个高薪"

What you assumed is opposed to choice A.

In the argument, it says that the number of human beings working in low-income occupation won't increse its share in empolyment but the number of those working in high-payment does although there will be a large increse in the number of human working in low-income occupation.

How could it happen?

share=No(low)/Total(low+high)

We know,share isn't changed. But No(low) has large increse.  It must be Total is getting bigger or it is very very big and increase number is not that nig could get some influence on it.

A gives us a chance to make it happen.

 

fionajiang

问题在于the greatest increase,也就是说low-paying的绝对增长量是最快.如果假设高低的初始人数一样,那么高收入人数占总量的比率一定比低收入占总量的比率低.要发生题中的情况,只有高的初始人数比较少.

冲凉猿人

谢谢各位！

我还有第2题的疑惑。。。。。。

gonghao

什么疑惑？