请教

michelle84

12.   “Though they soon will, patients should not have a legal right to see their medical records. As a doctor, I see two reasons for this. First, giving them access will be time-wasting because it will significantly reduce the amount of time that medical staff can spend on more important duties, by forcing them to retrieve and return files. Second, if my experience is anything to go by, no patients are going to ask for access to their records anyway.”

Which one of the following, if true, establishes that the doctor’s second reason does not cancel out the first?

(A) The new law will require that doctors, when seeing a patient in their office, must be ready to produce the patient’s records immediately, not just ready to retrieve them.

(B) The task of retrieving and returning files would fall to the lowest-paid member of a doctor’s office staff.

(C) Any patients who asked to see their medical records would also insist on having details they did not understand explained to them.

(D) The new law does not rule out that doctors may charge patients for extra expenses incurred specifically in order to comply with the new law.（A）

(E) Some doctors have all allowing their patients access to their medical records, but those doctors’ patients took no advantage of this policy.

虽然看了以前的一些帖子,但有些答案的解释仍没给出,我还是比较晕,麻烦NN解答.

21.   One method of dating the emergence of species is to compare the genetic material of related species. Scientists theorize that the more genetically similar two species are to each other, the more recently they diverged from a common ancestor. After comparing genetic material from giant pandas, red pandas, raccoons, coatis, and all seven bear species, scientists concluded that bears and raccoons diverged 30 to 50 million years ago. They further concluded that red pandas separated from the ancestor of today’s raccoons and coatis a few million years later, some 10 million years before giant pandas diverged from the other bears.

Which one of the following can be properly inferred from the passage?

(A) Giant pandas and red pandas are more closely related than scientists originally thought they were.

(B) Scientists now count the giant panda as the eighth species of bear.

(C) It is possible to determine, within a margin of just a few years, the timing of divergence of various species.

(D) Scientists have found that giant pandas are more similar genetically to bears than to raccoons.（D）

(E) There is substantial consensus among scientists that giant pandas and red pandas are equally related to raccoons.

CXD的书上解释过,但我自己还是不太清楚

25.   All of the best comedians have had unhappy childhoods. Yet, many people who have had happy childhoods are good comedians, and some good comedians who have had miserably unhappy childhoods are happy adults.

If the statements in the passage are true, which one of the following CANNOT be true?

(A) The proportion of good comedians who had unhappy childhoods is greater than the proportion of the best comedians who did.

(B) Some good comedians have had unhappy childhoods and are unhappy adults.

(C) Most of the best comedians are happy adults.

(D) More good comedians have had unhappy childhoods than have had happy childhoods.（A）

(E) The proportion of comedians who are happy adults is higher than the proportion who are unhappy adults.

这道题该怎样推?

25.   All of the best comedians have had unhappy childhoods. Yet, many people who have had happy childhoods are good comedians, and some good comedians who have had miserably unhappy childhoods are happy adults.

If the statements in the passage are true, which one of the following CANNOT be true?

(A) The proportion of good comedians who had unhappy childhoods is greater than the proportion of the best comedians who did.

(B) Some good comedians have had unhappy childhoods and are unhappy adults.

(C) Most of the best comedians are happy adults.

(D) More good comedians have had unhappy childhoods than have had happy childhoods.（A）

(E) The proportion of comedians who are happy adults is higher than the proportion who are unhappy adults.

这3道题较类似?

19.   Some good cooks are gourmet cooks who pride themselves on always using extravagantly rich ingredients in elaborate recipes. Some good cooks can be characterized as fast-food cooks. They may use rich ingredients as long as the recipes are easy to follow and take little time. Other good cooks are health food enthusiasts, who are concerned primarily with the nutritional value of food. But even though not all good cooks are big eaters, they all enjoy preparing and serving food.

If the information in the passage is true, which one of the following CANNOT be true?

(A) Most good cooks do not use extravagantly rich ingredients.

(B) Everyone who enjoys preparing and serving food is a good cook.

(C) More good cooks who use extravagantly rich ingredients are big eaters than are good cooks who do not use such ingredients.

(D) There are fewer good cooks who enjoy serving and preparing food than there are good cooks who are big eaters.（D）

(E) Gourmet cooks, fast-food cooks, and cooks who are health food ent

我选B,我觉得推不出来

番茄炒蛋

呵呵，提问要有技巧，一次最多两个，别急

你一下写这么多很少会有人有这么多的耐心

我今天还有些事情，明天有时间再上来给你答