如何攻克GMAT逻辑boldface题型.docx

1、如何攻克GMAT逻辑boldface题型逻辑Boldface练习题与方法总结By Anchoret很多朋友提出由于手头上的复习资料大多为笔考材料，缺乏新题型的练习，特别是逻辑中的Boldface题，只有Official Guide中的205题这一题，由此我们就希望能为大家提供多些Boldface练习题。感谢liu9903提供的这9道题目，真诚希望这些题目对即将考试的朋友能有所帮助。另外还要感谢qxz9524为我们提供的一些关于作Boldface题的总结。8/29/2003欢迎转载，转载请于醒目位置注明来源于ChaseD。下载地址：1. Modern navigation systems, wh

2、ich are found in most of todays commercial aircraft, are made with low-power circuitry, which is more susceptible to interference than the vacuum-tube circuitry found in older planes. During landing, navigation systems receive radio signals from the airport to guide the plane to the runway. Recently

3、, one plane with low-power circuitry veered off course during landing, its dials dimming, when a passenger turned on a laptop computer. Clearly, modern aircraft navigation systems are being put at risk by the electronic devices that passengers carry on board, such as cassette players and laptop comp

4、uters. EThe two portions in boldface play which of the following roles? (A) The first is a principle that the argument relies on and the second is a conclusion that can be drawn from the first. (B) The first is a fact that argument relies on and the second is a conclusion that must be drawn from thi

5、s argument. (C) The first acknowledges a consideration that supports that main position; the second is that conclusion. (D) The first is an evidence that supports the conclusion, the second is that conclusion. (E) The first is a principle that is necessary for this argument, the second is a conclusi

6、on that could be drawn from this argument. 2. A double-blind study, in which neither the patient nor the primary researcher knows whether the patient is being given the drug being tested or a placebo, is the most effective procedure for testing the efficacy of a drug. But we will not be able to perf

7、orm such a study on this new drug, since the drug will have various effects on the patients bodies, which will make us aware of whether the patients are getting the drug or a placebo. BThe two portions in boldface play which of the following roles? (A) The first is a general consideration that intro

8、duces the argument; the second is a special situation that weighs against the first. (B) The first is a general principle that is necessary for this argument; the second is an anti-consideration that the argument includes. (C) The first is a premise that this argument includes; the second is a main

9、idea that can be drawn from this argument. (D) The first is an evidence that this argument includes; the second is a conclusion that can not be drawn from this argument. (E) The first is a general situation that supports this argument; the second is a conclusion that can be drawn from a special fact

10、. 3. The interstitial nucleus, a sub-region of the brains hypothalamus, is typically smaller for male cats than for female cats. A neurobiologist performed autopsies on male cats who died from disease X, a disease affecting no more than 0.5 percent of male cats, and found that these male cats had in

11、terstitial nuclei that were as large as those generally found in female cats. Thus, the size of the interstitial nucleus determines whether or not male cats can contract disease X, but, the hypothalamus is known not to be causally linked to disease Y, and disease X is a subtype of disease Y.The two

12、portions in boldface play which of the following roles? (A) The first is a fact in support of the consideration that is one of two points of this argument; the second is the alternative point that weighs against the first. (B) The first is an evidence that supports the consideration that the argumen

13、t includes; the second is the fact that weighs against that consideration that could be drawn from the first. (C) The first is a general principle that is against the conclusion; the second is that conclusion. (D) The first is an evidence that supports the conclusion; the second is an exceptional ex

14、ample. (E) The first is a fact in support of the conclusion that the argument depends on; the second is a fact that is against the first one. 4. More and more computer programs that provide solutions to mathematical problems in engineering are being produced, and it is thus increasingly unnecessary

15、for practicing engineers to have a thorough understanding of fundamental mathematical principles. Consequently, in training engineers who will work in industry, less emphasis should be placed on mathematical principles, so that space in the engineering curriculum will be available for other importan

16、t subjects. EThe two portions in boldface play which of the following roles? (A) The first is the second-premise that the argument includes; the second is the conclusion that could be drawn from this passage. (B) The first is the fact that is necessary for this argument; the second is the conclusion

17、 that must be drawn from this passage. (C) The first is the part of premise that the argument includes; the second is the inference that could be drawn from this passage. (D) The first is the part of evidence that supports this argument; the second is the inference that could be drawn from this pass

18、age. (E) The first is the first conclusion in this argument; the second is the second conclusion in this argument. 5. Gasoline-powered boat engines manufactured in the a North American country prior to 1990 contribute significantly to the pollution found in the worlds oceans. In 1990, however, the g

19、overnment imposed stricter pollution controls on gasoline engines manufactured for boats, and beginning in 1995, the government imposed a program of inspections for pre-1990 boat engines with increasingly rigorous pollution standards. As the older boat engines fail to pass inspection, boat owners ar

20、e increasingly retiring their old engines in favor of newer, less-polluting boat engines. As a result, the amount of pollution these older boat engines emit into the worlds oceans will steadily decrease over the next en years.The two portions in boldface play which of the following roles? (A) The fi

21、rst is a pattern of cause and effect that acts as an evidence in support of this argument; the second is the conclusion that can be drawn from this argument. (B) The first is a fact that acts as a principle in support of this argument; the second is the conclusion that must be drawn from this argume

22、nt. (C) The first is a pattern of cause and effect that acts as an special evidence in support of the conclusion; the second is a general point that can be drawn from this argument. (D) The first is a pattern of cause and effect that acts as the third evidence in support of the argument; the second

23、is a conclusion that must be true. (E) The first is a final evidence in support of the argument; the second is a conclusion that can be drawn only from the first. 6. Plants that exhibit certain leaf diseases tend to measure extremely high in the amount of zinc in their leaf and stem tissue. Botanist

24、s have discovered that phosphorus of the type typically used in a phosphorus-high fertilizer reacts with the zinc in such a way as to prevent treated plants from exhibiting the leaf diseases, and zinc is the cause and not merely an effect of the leaf diseases. Thus, plants can be cured from these le

25、af diseases by the use of a fertilizer high in phosphorus. The two portions in boldface play which of the following roles? (A) The first is the first-premise that the argument includes; the second is the second-premise that is in support of this argument. (B) The first is the background that the arg

26、ument includes; the second is the part of evidence in support of this argument. (C) The first is the first-premise that the argument includes; the second is the consideration that is in support of the first. (D) The first is the premise that supports the evidence; the second is that evidence. (E) Th

27、e first is the first-premise that the argument includes; the second is the second-premise that is complementary to other evidence. 7. To be accepted as a member at the Brown Country Club, one must have a net worth of over ten million dollars and must not have any connections to the entertainment ind

28、ustry. Robert Chase, the publishing magnate, has a net worth of 5 billion dollars and chase has not financed any Hollywood movies, so he must be accepted as a member at the Brown Country Club. AThe two portions in boldface play which of the following roles? (A) The first is the part of evidence in s

29、upport of this argument; the second is the conclusion that could not be drawn from all evidence that the argument contains. (B) The first is the first-evidence that supports this argument; the second is the main point that must be drawn from all evidence that the argument includes. (C) The first is

30、the one fact of two that argument includes; the second is the conclusion that could be drawn from this passage. (D) The first is the background that is necessary for this argument; the second is the conclusion that is not drawn only from the first. (E) The first is the cause that the argument includ

31、es; the second is the effect that can be drawn only from this cause. 8. The survival of the publishing industry depends upon the existence of a public who will buy the printed word in the form of newspapers, books and magazines. Over the past several years, however, the advance of electronic media,

32、particularly CD-ROMs, online computer services, and the Internet, has made 9information available to the public electronically without the need for printed materials. As the availability of electronic media increases and as it is more easily accessible, the public has less need for printed materials. So the publishing industry is threatened by the advance of the computer information age. DThe two portions in boldface play which of the following roles? (A) The first is the part of evidence that the argument