【OG20-P579-665题】Last year a record number of new manufacturing jobs were created. Will this year bring another record? Well, any new manufacturing job is created either within an existing company or by the start-up of a new company. Within existing firms, new jobs have been created this year at well below last year's record pace. At the same time, there is considerable evidence that the number of new companies starting up will be no higher this year than it was last year and there is no reason to think that the new companies starting up this year will create more jobs per company than did last year's start-ups. So clearly, the number of new jobs created this year will fall short of last year's record. In the argument given, the two portions in boldface play which of the following roles?
【OG20-P589-700题】Last year a record number of new manufacturing jobs were created. Will this year bring another record? Well, any new manufacturing job is created either within an existing company or by the start-up of a new company. Within existing firms, new jobs have been created this year at well below last year's record pace. At the same time, there is considerable evidence that the number of new companies starting up this year will be no higher than it was last year and there is no reason to think that the new companies starting up this year will create more jobs per company than did last year's start-ups. So clearly, the number of new jobs created this year will fall short of last year's record. In the argument given, the two portions in boldface play which of the following roles?
【OG20-P569-635题】Plant scientists have used genetic engineering on seeds to produce crop plants that are highly resistant to insect damage. Unfortunately, the seeds themselves are quite expensive, and the plants require more fertilizer and water to grow well than normal ones. Accordingly, for most farmers the savings on pesticides would not compensate for the higher seed costs and the cost of additional fertilizer. However, since consumer demand for grains, fruits and vegetables grown without the use of pesticides continues to rise, the use of genetically engineered seeds of this kind is likely to become widespreadIn the argument given, the two portions in boldface play which of the following roles?
【OG20-P570-636题】Which of the following most logically completes the passage?Leptin, a protein occurring naturally in the blood, appears to regulate how much fat the body carries by speeding up the metabolism and decreasing the appetite when the body has too much fat. Mice that do not naturally produce leptin have more fat than other mice, but lose fat rapidly when they are given leptin injections. Unfortunately, however, leptin cannot be used as a dietary supplement to control fat, since_________.
【OG20-P574-651题】Farmer: Worldwide, just three grain crops-rice, wheat, and corn-account for most human caloric intake. To maintain this level of caloric intake and also keep pace with global population growth, yields per acre from each of these crops will have to increase at least 1.5 percent every year, given that the supply of cultivated land is diminishing. Therefore, the government should increase funding for research into new ways to improve yieldsWhich of the following is an assumption on which the farmers argument depends?
【OG20-P576-657题】Economist: Tropicorp, which constantly seeks profitable investment opportunities, has been buying and clearing sections of tropical forest for cattle ranching, although pastures newly created there become useless for grazing after just a few years. The company has not gone into rubber tapping, even though greater profits can be made from rubber tapping, which leaves the forest intact. Thus, some environmentalists argue that Tropicorp's actions do not serve even its own economic interest. However, the initial investment required for a successful rubber-tapping operation is larger than that needed for a cattle ranch; there is a shortage of workers employable in rubber-tapping operations; and taxes are higher on profits from rubber tapping than on profits from cattle ranching. Consequently, the environmentalists conclusion is probably wrong .In the economists argument, the two boldface portions play which of the ?
【OG20-P591-705题】Sammy: For my arthritis, I am going to try my aunts diet: large amounts of wheat germ and garlic. She was able to move more easily right after she started that dietPat: When my brother began that diet, his arthritis got worse. But he has been doing much better since he stopped eating vegetables in the nightshade family, such as tomatoes and peppers. Which of the following, if true, would provide a basis for explaining the fact that Sammy's aunt and Pats brother had contrasting experiences with the same diet?
【OG20-P580-670题】Enforcement of local speed limits through police monitoring has proven unsuccessful in the town of Ardane. In many nearby towns, speed humps(raised areas of pavement placed across residential streets, about 300 feet apart)have reduced traffic speeds on residential streets by 20 to 25 percent. In order to reduce traffic speed and thereby enhance safety residential neighborhoods, Ardane's transportation commission plans to install multiple speed humps in those neighborhoods. Which of the following, if true, identifies a potentially serious drawback to the plan for installing speed humps in Ardane?
【OG20-P585-685题】A company has developed a new sensing device that, according to the company's claims, detects weak, ultralow-frequency electromagnetic signals associated with a beating heart. These signals, which pass through almost any physical obstruction, are purportedly detected by the device even at significant distances. Therefore, if the company’s claims are true, their device will radically improve emergency teams ability to locate quickly people who are trapped within the wreckage of collapsed buildings. Which of the following, if true, most strengthens the argument?
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12G备考资料