求助两道CR题，新东方黄皮书逻辑推理部分

1. Fewer than half of the jobs in the United States conform even loosely to the standard forty-hour, nine-to-five weekday schedule, according to demographic experts. This is largely due to the rapid increase in the number of service firms and in the proportion of the United States labor force these firms employ, the experts say.

Which of the following, if true, best helps to explain how the growth of the service sector has had the effect noted above?

A. In order to supplement their incomes, a small percentage of workers in other sectors of the economy take service-sector jobs as sell.

B. New service-sector firms have arisen to fill the need for day care for children, a need that was created by the increasing number of families in which both parents are emplyed.

C.More part-time than full-time jobs have been created through the application of new technologies to traditional occupations.

D. Manufacturing enterprises and other nonservice firms often operate twenty-four hours a day, seven days a week.

E. The largest and fastest-growing segment of the service sector caters to leisure activities pursued outside the standard nine-to-five weekday schedule.

答案是E，但我觉得E选项是无关选项……还请各位牛人帮忙分析解释。谢谢！

2.Studies have shown that people who rarely take antibiotics, which are antibacterial drugs, have stronger immune systems than do people who take antibiotics frequently. Yet there is no evidence that taking antibiotics weakens the immune system.

Which of the following, if true, best reconciles the apparent discrepancy in the information above?

A. People who have strong immune systems seldom get the kinds of infections for which people normally take antibiotics.

B. People who have strong immune systems are seldom aware that their immune systems are unusually strong.

C. People who have weak immune systems have great difficulty recovering from bacterial infections if they do not take antibiotics.

D. Some people take antibiotics even though the antibiotics cause a variety of side effects.

E. Some people take antibiotics frequently because their doctors prescibe antibiotics for viral infections as well as for bacterial infections.

答案选A，但我觉得C也可以说明。也请各位帮忙分析一下。谢谢！

1.用有关无关的概念最好区分。

In order to supplement their incomes, a small percentage of workers in other sectors of the economy take service-sector jobs as sell.--无关。

B. New service-sector firms have arisen to fill the need for day care for children, a need that was created by the increasing number of families in which both parents are emplyed.-带入原文中解释不了。

C.More part-time than full-time jobs have been created through the application of new technologies to traditional occupations.---这个选项如果要正确的话，必须有个假设就是parttime payment>fulltime， 但是文中并没有提到阿。

D. Manufacturing enterprises and other nonservice firms often operate twenty-four hours a day, seven days a week.--无关

2。 其实A&C的区别很简单。

A选项提到了People who have strong immune systems ，也提到了people normally take antibiotics.从意思上去理解也是正确的。

c只是说了weak的那部分人。给的信息不完全的。

文章并没有提到payment啊...为什么需要这个假设？

那么E选项又是如何解释题目的呢？