GWD7-Q17: Of patients over 65 years old who survived coronary bypass surgery—a procedure widely prescribed for people with heart disease—only 75 percent benefited from the surgery. Thus it appears that for one in four such patients, the doctors who advised them to undergo this surgery, with its attendant risks and expense, were more interested in an opportunity to practice their skills and in their fee than in helping the patient. Which of the following, if true, most seriously undermines the argument?
A. Many of the patients who receive coronary bypass surgery are less than 55 years old. B. ossible benefits of coronary bypass surgery include both relief from troubling symptoms and prolongation of life. C. Most of the patients in the survey decided to undergo coronary bypass surgery because they were advised that the surgery would reduce their risk of future heart attacks. D. The patients over 65 years old who did not benefit from the coronary bypass surgery were as fully informed as those who did benefit from the surgery as to the risks of the surgery prior to undergoing it. E. The patients who underwent coronary bypass surgery but who did not benefit from it were medically indistinguishable, prior to their surgery, from the patients who did benefit.
GWD7-Q5: Exposure to certain chemicals commonly used in elementary schools as cleaners or pesticides causes allergic reactions in some children. Elementary school nurses in Renston report that the proportion of schoolchildren sent to them for treatment of allergic reactions to those chemicals has increased significantly over the past ten years. Therefore, either Renston’s schoolchildren have been exposed to greater quantities of the chemicals, or they are more sensitive to them than schoolchildren were ten years ago. Which of the following is an assumption on which the argument depends?
A. The number of school nurses employed by Renston’s elementary schools has not decreased over the past ten years. B. Children who are allergic to the chemicals are no more likely than other children to have allergies to other substances. C. Children who have allergic reactions to the chemicals are not more likely to be sent to a school nurse now than they were ten years ago. D. The chemicals are not commonly used as cleaners or pesticides in houses and apartment buildings in Renston. E. Children attending elementary school do not make up a larger proportion of Renston’s population now than they did ten years ago.
2012.3.11贴错题 SC1： Only seven people this century have been killed by the great white shark, the man-eater of the movies—less than those killed by bee stings. A. movies—less than those B. movies—fewer than have been C. movies, which is less than those D. movies, a number lower than the people E. movies, fewer than the ones
OA: B A: people是可数名词，不能用less修饰 B: Correct. Fewer修饰可数名词people，have been与前句平衡 C: which修饰movies，含义不对 D: a number和the people比较，不平衡 E: the ones指代模糊，可能指代people, 也可能指代movies
Explanation from Manhattan GMAT Forums:
"in this context, the dash essentially serves the same purpose as a comma. the only difference is that you don't use dashes at random; you use them when there is some special emphasis or irony (or both) in what you're saying.
example: Joe, who is from Miami, complained about the cold of the Las Vegas winter. --> no irony; this makes perfect sense, since las vegas is much colder than miami in winter. therefore, no reason to use dashes. Joe -- who is from Duluth -- complained about the cold of the Las Vegas winter. --> extreme irony, since duluth is about 70 degrees colder than las vegas in the winter.
same sort of deal here: there's considerable irony in the fact that the formidable shark has fewer kills under its belt than does the cute lil yellow fuzzy bee.
as a bonus, the dash also adds a degree of clarity, since "the great white shark" is already followed by one comma + appositive modifier; adding another modifier after another comma would muddy the waters a bit too much for my liking (and, apparently, for the test writers' liking as well)."
See link: http://www.manhattangmat.com/forums/can-somebody-help-me-out-with-this-question-t4278.html
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发表于 2012-2-26 08:12:12
(忽然发现二月只有二十九天啊！那就没三十天了呀！幸好今年是闰年！Oh yeah 2012! )
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