• 费费逻辑宝典全集（共135题）是目前公认的非常好的GMAT逻辑复习补充材料，这是费费从最新LSAT逻辑中摘出的他认为最具有代表性也是最符合GMAT逻辑原则的135题。 • 本套练习题共135题，根据牛人建议：为锻炼Pace，每18题划分为一组，限时30分钟完成。 • 《费费逻辑宝典》详解版已经发布，请到ChaseDream超级论坛【GMAT逻辑专区】下载：http://forum.chasedream.com/
1. Although 90 percent of the population believes itself to be well informed about health care, only 20 percent knows enough about DNA. So apparently at least 80 percent of the population does not know enough about medical concepts to make well-informed personal medical choices or to make good public policy decisions about health care.
The argument’s reasoning is questionable because the argument fails to demonstrate that
(A) those people who can understand news stories about DNA are able to make well-informed personal medical choices
(B) more than 20 percent of the population needs to be well informed about health care for good public policy decisions about health care to be made
(C) one’s being able to make well-informed personal medical choices ensures that one makes good public policy decisions about health care
(D) an understanding of DNA is essential to making well-informed personal medical choices or to making good public policy decisions about health care
(E) since 90 percent of the population believes itself to be well informed about health care, at least 70 percent of the population is mistaken in that belief.
2. During the 1980’s, Japanese collectors were very active in the market for European art, especially as purchasers of nineteenth-century Impressionist paintings. This striking pattern surely reflects a specific preference on the part of many Japanese collectors for certain aesthetic attributes they found in nineteenth-century Impressionist paintings.
Which one of the following, if true, most strongly supports the explanation above?
(A) Impressionist paintings first became popular among art collectors in Europe at the beginning of the twentieth century.
(B) During the 1980’s, the Japanese economy underwent a sustained expansion that was unprecedented in the country’s recent history.
(C) Several nineteenth-century Impressionist painters adopted certain techniques and visual effects found in Japanese prints that are highly esteemed in Japan.
(D) During the 1960s and the 1970s, the prices of nineteenth-century Impressionist paintings often exceeded the prices of paintings by older European masters.
(E) During the 1980’s, collectors from Japan and around the world purchased many paintings and prints by well-known twentieth-century Japanese artists.
3. Because of the recent recession in Country A most magazines published there have experienced decreases in advertising revenue, so much so that the survival of the most widely read magazines is in grave doubt. At the same time, however, more people in Country A are reading more magazines than ever before, and the number of financially successful magazines in Country A is greater than ever.
Which one of the following, if true, most helps to resole the apparent discrepancy in the information above?
(A) Most magazines reduce the amount they charge for advertisement’s during a recession.
(B) The audience for a successful television show far exceeds the readership of even the most widely read magazine.
(C) Advertising is the main source of revenue only for the most widely read magazines; other magazines rely on circulation for their revenue.
(D) Because of the recession, people in Country A have cut back on magazine subscriptions and are reading borrowed magazines.
(E) More of the new general interest magazines that were launched this year in Country A have survived than survived in previous years.
4. The gray squirrel, introduced into local woodlands ten years ago, threatens the indigenous population of an endangered owl species, because the squirrels’ habitual stripping of tree bark destroys the trees in which the owls nest. Some...