问几道逻辑(来自cr1和cr2中）

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101.(31700-!-item-!-188;#058&006145)(GWD 3-Q38/prep 2-6 different type)

蓝色为正确答案 红色的为本人所选 望高手解答！谢谢

Two computer companies, Garnet and Renco, each pay Salcor to provide health insurance for their employees.Because early treatment of high cholesterol can prevent strokes that would otherwise occur several years later, Salcor encourages Garnet employees to have their cholesterol levels tested and to obtain early treatment for high cholesterol.Renco employees generally remain with Renco only for a few years, however.Therefore, Salcor lacks any financial incentive to provide similar encouragement to Renco employees.

Which of the following, if true, most seriously weakens the argument?

A. Early treatment of high cholesterol does not eliminate the possibility of a stroke later in life.

B. People often obtain early treatment for high cholesterol on their own.

C. Garnet hires a significant number of former employees of Renco.

D. Renco and Garnet have approximately the same number of employees.

E. Renco employees are not, on average, significantly younger than Garnet employees.



102.(29392-!-item-!-188;#058&004074)(GWD 1-Q15)



In parts of South America, vitamin-A deficiency is a serious health problem, especially among children.In one region, agriculturists hope to improve nutrition by encouraging farmers to plant a new variety of sweet potato called SPK004 that is rich in betacarotene, which the body converts into vitamin A.The plan has good chances of success, since sweet potato is a staple of the region’s diet and agriculture, and the varieties currently grown contain little beta-carotene.

Which of the following, if true, most strongly supports the prediction that the plan will succeed?

A. There are other vegetables currently grown in the region that contain more beta-carotene than the currently cultivated varieties of sweet potato do.

B. The flesh of SPK004 differs from that of the currently cultivated sweet potatoes in color and texture, so traditional foods would look somewhat different when prepared from SPK004.

C. For successful cultivation of SPK004, a soil significantly richer in nitrogen is needed than is needed for the varieties of sweet potato currently cultivated in the region.

D. There are no other varieties of sweet potato that are significantly richer in beta-carotene than SPK004 is.

E. The currently cultivated varieties of sweet potato contain no important nutrients that SPK004 lacks.

110.(30658-!-item-!-188;#058&005491)(GWD 7-Q17)



Of patients over 65 years old who survived coronary bypass surgery—a procedure widely prescribed for people with heart disease—only 75 percent benefited from the surgery.Thus it appears that for one in four such patients, the doctors who advised them to undergo this surgery, with its attendant risks and expense, were more interested in an opportunity to practice their skills and in their fee than in helping the patient.

Which of the following, if true, most seriously undermines the argument?

A. Many of the patients who receive coronary bypass surgery are less than 55 years old.

B. Possible benefits of coronary bypass surgery include both relief from troubling symptoms and prolongation of life.

C. Most of the patients in the survey decided to undergo coronary bypass surgery because they were advised that the surgery would reduce their risk of future heart attacks.

D. The patients over 65 years old who did not benefit from the coronary bypass surgery were as fully informed as those who did benefit from the surgery as to the risks of the surgery prior to undergoing it.

E. The patients who underwent coronary bypass surgery but who did not benefit from it were medically indistinguishable, prior to their surgery, from the patients who did benefit.



116.(30096-!-item-!-188;#058&005070)(T-9-Q18 different type)



The growing popularity of computer-based activities was widely expected to result in a decline in television viewing, since it had been assumed that people lack sufficient free time to maintain current television-viewing levels while spending increasing amounts of free time on the computer.That assumption, however, is evidently false: in a recent mail survey concerning media use, a very large majority of respondents who report increasing time spent per week using computers report no change in time spent watching television.

In order to evaluate the argument, it would be most useful to determine which of the following?

A. Whether the survey collected information about the amount of money respondents spent on free-time media use

B. Whether the amount of time spent watching television is declining among people who report that they rarely or never use computers

C. Whether the type of television programs a person watches tends to change as the amount of time spent per week using computers increases

D. Whether a large majority of the computer owners in the survey reported spending increasing amounts of time per week using computers

E. Whether the survey respondents’ reports of time spent using computers included time spent using computers at work





119.(28734-!-item-!-188;#058&003375)(GWD 17-Q30)



In a study conducted in Pennsylvania
, servers in various restaurants wrote “Thank you” on randomly selected bills before presenting the bills to their customers.Tips on these bills were an average of three percentage points higher than tips on bills without the message.Therefore, if servers in Pennsylvania regularly wrote “Thank you” on restaurant bills, their average income from tips would be significantly higher than it otherwise would have been.
Which of the following is an assumption on which the argument relies?

A. The “Thank you” messages would have the same impact on regular patrons of a restaurant as they would on occasional patrons of the same restaurant.

B. Regularly seeing “Thank you” written on their bills would not lead restaurant patrons to revert to their earlier tipping habits.

C. The written “Thank you” reminds restaurant patrons that tips constitute a significant part of the income of many food servers.

D. The rate at which people tip food servers in Pennsylvania
does not vary with how expensive a restaurant is.
E. Virtually all patrons of the Pennsylvania
restaurants in the study who were given a bill with “Thank you” written on it left a larger tip than they otherwise would have.
蓝色为正确答案 红色的为本人所选 望高手解答！谢谢


蓝色为正确答案 红色的为本人所选 望高手解答！谢谢

sdcar2010

Two computer companies, Garnet and Renco, each pay Salcor to provide health insurance for their employees.Because early treatment of high cholesterol can prevent strokes that would otherwise occur several years later, Salcor encourages Garnet employees to have their cholesterol levels tested and to obtain early treatment for high cholesterol.Renco employees generally remain with Renco only for a few years, however.Therefore, Salcor lacks any financial incentive to provide similar encouragement to Renco employees.

Which of the following, if true, most seriously weakens the argument?

A. Early treatment of high cholesterol does not eliminate the possibility of a stroke later in life.

B. People often obtain early treatment for high cholesterol on their own.

C. Garnet hires a significant number of former employees of Renco.

D. Renco and Garnet have approximately the same number of employees.

E. Renco employees are not, on average, significantly younger than Garnet employees.

If as answer C says, "Garnet hires a significant number of former employees of Renco", then Renco HAS a financial incentive to prevent this group of employees from developing stroke since Renco would have to pay for their treatment once they become Garnet's employees.