[求助]两道题 谢谢

Although the ratio of physicians to total population is about the same in the laceName w:st="on">UnitedlaceName> laceType w:st="on">StatelaceType> and Canada, the United States has 33 percent more surgeons per capita. Clearly, this is the reason people in the United States undergo 40 percent more operations per capita than do Canadians.

The explanation given above rests on an assumption that

(A)patients in the United States do not have a greater need for surgery than do patients in Canada.

(B)the population of the United States is not larger than that of Canada.

(C)United States patients sometimes travel to Canada for certain kinds of surgery.

(D)general practitioners in the United States do not as a rule examine a patient who is a candidate for surgery before sending the patient to a surgeon.

(E)there are no unnecessary surgical operations performed in Canada.

我没有正确答案，请问大家觉得选什么？我们应该怎么看33到40的差距，认为增加呢还是基本保持一致？

2      OG10th 171

A recent report determined that although only 3 percent of drivers on Maryland highways equipped their vehicles with radar detectors, 33 percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drvers who do not.

the conclusion drawn above depends on which of the following assumptions?

a drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not

b drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed

c the number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors

d many of teh vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report

e drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered by the report

按照排除法我可以选出答案b，但还是觉得逻辑很乱，希望有人知道一下

Although the ratio of physicians to total population is about the same in the LACENAME w:st="on">UnitedLACENAME> LACETYPE w:st="on">StateLACETYPE> and Canada, the LACE w:st="on">United StatesLACE> has 33 percent more surgeons per capita. Clearly, this is the reason people in the United States undergo 40 percent more operations per capita than do Canadians.

The explanation given above rests on an assumption that

(A)patients in the United States do not have a greater need for surgery than do patients in LACE w:st="on">CanadaLACE>.－－weaken的吧

(B)the population of the United States is not larger than that of LACE w:st="on">CanadaLACE>.－－无关

(C)United States patients sometimes travel to Canada for certain kinds of surgery.－－这应该导致加拿大手术量上升，weaken

(D)general practitioners in the United States do not as a rule examine a patient who is a candidate for surgery before sending the patient to a surgeon.－－－因为不做检查，每个capita的美国医生数量又比加拿大多，可能导致手术量多。

(E)there are no unnecessary surgical operations performed in Canada.没有不必要的手术，似乎推不出美国一定有非必要的手术做了，从而数量上升。

题目的意思是，医生数量多，手术量多。不知道对不对

A recent report determined that although only 3 percent of drivers on Maryland highways equipped their vehicles with radar detectors, 33 percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drvers who do not.

the conclusion drawn above depends on which of the following assumptions?

a drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not－－weaken

b drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed

c the number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors－－－无关

d many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report－－－无关

e drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered by the report－－无关

题目的意思：3％的在马里兰的司机为车装雷达，33％的超速记录单的车都装有雷达。这是个数字题。你想啊：正常情况下，应该得出的结论是只有3％的超速记录单里的车装有雷达，现在的数字是33％。只能说明是不装雷达的人不超速，装雷达的车屡次超速，使得超速罚单的装雷达的车子的比例高达33％。

应该是这解释