求助gwd的几道题

GWD-10-Q29：GWD-2-14

Smithtown
                University’s fund-raisers succeeded in getting donations from 80 percent of the potential donors they contacted.  This success rate, exceptionally high for university fund-raisers, does not indicate that they were doing a good job.  On the contrary, since the people most likely to donate are those who have donated in the past, good fund-raisers constantly try less-likely prospects in an effort to expand the donor base.  The high success rate shows insufficient canvassing effort.

Which of the following, if true, provides more support for the argument?

A.      Smithtown
                University’s fund-raisers were successful in their contacts with potential donors who had never given before about as frequently as were fund-raisers for other universities in their contacts with such people.

B.       This year the average size of the donations to Smithtown
                University from new donors when the university’s fund-raisers had contacted was larger than the average size of donations from donors who had given to the university before.

C.      This year most of the donations that came to Smithtown
                University from people who had previously donated to it were made without the university’s fund-raisers having made any contact with the donors.

D.      The majority of the donations that fund-raisers succeeded in getting for Smithtown
                University this year were from donors who had never given to the university before.

E.       More than half of the money raised by Smithtown
                University’s fund-raisers came from donors who had never previously donated to the university.

Why a ?

An overwhelming proportion of the most productive employees at SaleCo’s regional offices work not eight hours a day, five days a week, as do other SaleCo employees, but rather ten hours a day, four days a week, with Friday off.  Noting this phenomenon, SaleCo’s president plans to increase overall productivity by keeping the offices closed on Fridays and having all employees work the same schedule—ten hours a day, four days a week.

Which of the following, if true, provides the most reason to doubt that the president’s plan, if implemented, will achieve its stated purpose?

A.      Typically, a SaleCo employee’s least productive hours in the workplace are the early afternoon hours.

B.       None of the employees who work four days a week had volunteered to work that schedule, but all were assigned to it by their supervisors.

C.      Working ten hours a day has allowed the most productive employees to work two hours alone each day in their respective offices relatively undisturbed by fellow employees.

D.      Employees at SaleCo are compensated not on the basis of how many hours a week they work but on the basis of how productive they are during the hours they are at work.

E.       Those SaleCo employees who have a four-day workweek do not take any of their office work to do at home on Fridays.

Why not a but c?

GWD5-Q13:

It is true of both men and women that those who marry as young adults live longer than those who never marry.  This dose not show that marriage causes people to live longer, since, as compared with other people of the same age, young adults who are about to get married have fewer of the unhealthy habits that can cause a person to have a shorter life, most notably smoking and immoderate drinking of alcohol.

Which of the following, if true, most strengthens the argument above?

A.      Marriage tends to cause people to engage less regularly in sports that involve risk of bodily harm.

B.       A married person who has an unhealthy habit is more likely to give up that habit than a person with the same habit who is unmarried.

C.      A person who smokes is much more likely than a nonsmoker to marry a person who smokes at the time of marriage, and the same is true for people who drink alcohol immoderately.

D.      Among people who marry as young adults, most of those who give up an unhealthy habit after marriage do not resume the habit later in life.

E.       Among people who as young adults neither drink alcohol immoderately nor smoke, those who never marry live as long as those who marry.

为什么要选e？？？