A. Many climbers, lulled into a false sense of security, use the new equipment to attempt climbing feats of which they are not capable.
C. Difference insurance companies have different standards for determining what constitutes emergency treatment.
B. The cost of medical care in Sparva is higher than the national average.
D. In the past ten years there have been improvements in mountain-climbing techniques as well as in mountain-climbing equipment.
Which of the following statements directly contradicts the information presented above?
D. The first sums up the argument’s position with regard to a certain hypothesis; the second provides grounds for that position.
In the United States between 1850 and 1880, the number of farmers continued to increase, but at a rate lower than that of the general population
E. Although the rate of mountain-climbing injuries has increased, the rate of mountain-climbing deaths has not changed.
C. The first expresses the argument’s dismissal of an objection to the position it seeks to establish; the second is that position.
B. Some mountain-climbing injuries are caused by unforeseeable weather conditions.
A. The first is a claim made by the argument in support of a certain position; the second is that position.
E. There are fewer traffic accidents annually in Sparva than in any of the provinces of comparable or great population.
Which of the following, if true, most strengthen the argument?
请看下题(新GRE官方指南 P321)：，但其难度远小于GMAT逻辑中的同类题型。但在新GRE中， 固然在原本的GRE阅读中也有侧重考核思维的题目。比如会有增强题和削弱题，情况似乎发生了变更
C. The proportion of farmers in the United States labor force remained constant in the 30 years between 1850 and 1880.
A. Car insurance costs more in Sparva than in any other province.
D. Fewer insurance companies operate in Sparva than in any other province.
Which of the following, if true, best reconciles the apparent discrepancy presented in the passage?
E. The first is a concession by the argument that its initial formulation of the position it seeks to establish requires modification; the second presents that position in a modified form.
还有奇妙之感。微文不单渺小， 大师都晓得。试看下例(新GRE官方指南 P71)：，还增加了只要一到四句话的超短文章，老GRE阅读从篇幅上分有长文章和短文章;而在新GRE阅读中不单保存原本的长文和短文，我将其称之为微文
In the past ten years, there have been several improvements in mountain-climbing equipment. These improvements have made the sport both safer and more enjoyable for experienced climbers. Despite these improvements, however, the rate of mountain-climbing injuries has doubled in past ten years.
Sparva, unlike Treland’s other provinces, requires automobile insurers to pay for any medical treatments sought by some one who has been involved in an accident; in the other provinces, insurers pay for nonemergency treatment only if they preapprove the treatment. Clearly, Sparva’s less restrictive policy must be the explanation for the fact that altogether insurers there pay for far more treatments after accidents than insurers in other provinces, even though Sparva does not have the largest population.
B. The first is a judgment made by the argument about a certain explanation; the second is that explanation.
In the argument given, the two portions in boldface play which of the following roles?
At a certain period in Earth’s history, its atmosphere contained almost no oxygen, although plants were producing vast quantities of oxygen. As a way of reconciling these two facts, scientists have hypothesized that nearly all of the oxygen being produced was taken up by iron on Earth’s surface. Clearly, however, this explanation is inadequate. New studies show that the amount of iron on Earth’s surface was not sufficient to absorb anywhere near as much oxygen as was being produced. Therefore, something in addition to the iron on Earth’s surface must have absorbed much of the oxygen produced by plant life.
C. Mountain climbing, although a dangerous sport, does not normally result in injury to the experienced climber.
E. The proportion of farmers in the general population increased from 68 percent in 1850 to 72 percent in 1880.
D. The proportion of farmers in the United States labor force decreased from 64 percent in 1850 to 49 percent in 1880.
所以对该推理的增强就在于对其因果关系的支持，其论据(Sparva’s less restrictive policy)与其结论(insurers in Sparva pay for far more treatments)都是原文所引述的究竟，同时更是对人推理才能的考核。，这正是GMAT增强题的精华。 而这道题，无需支持
A. The number of farmers in the general population increased slightly in the 30 years between 1850 and 1880.
B. The rate of growth of the United States labor force and the rate of growth of the general population rose simultaneously in the 30 years between 1850 and 1880.