1. Although the ratio of physicians to total population is about the same in the United States and Canada, the United States has 33 percent more surgeons per capita. Clearly, this is the reason people in the United States undergo 40 percent more operations per capita than do Canadians.
The explanation given above rests on an assumption that
(A) patients in the United States do not have a greater need for surgery than do patients in Canada.
(B) the population of the United States is not larger than that of Canada. （百分比与数量要分清）
(C) United States patients sometimes travel to Canada for certain kinds of surgery.
(D) general practitioners in the United States do not as a rule examine a patient who is a candidate for surgery before sending the patient to a surgeon.
(E) there are no unnecessary surgical operations performed in Canada.
答案为什么选A？请大家帮忙解释一下行么？
2. Which of the following best completes the passage below?
Sales campaigns aimed at the faltering personal computer market have strongly emphasized ease of use, called user-friendliness. This emphasis is oddly premature and irrelevant in the eyes of most potential buyers, who are trying to address the logically prior issue of whether ______.
(A) user-friendliness also implies that owners can service their own computers
(B) personal computers cost more the more user-friendly they are
(C) currently available models are user-friendly enough to suit them
(D) the people promoting personal computers use them in their own homes
(E) they have enough sensible uses for a personal computer to justify the expense of buying one
这个题我选A，答案是E，不懂啊啊啊
3 The spacing of the four holes on a fragment of a bone flute excavated at a Neanderthal campsite is just what is required to play the third through sixth notes of the diatonic scale—the seven-note musical scale used in much of Western music since the Renaissance.Musicologists therefore concluded that the diatonic musical scale was developed and used thousands of years before it was adopted by Western musicians.
Which of the following, if true, most strongly supports the conclusion?
A.Bone flutes were probably the only musical instrument made by Neanderthals.
B.No musical instrument that is known to have used a diatonic scale is of an earlier date than the flute found at the Neanderthal campsite.
C.The flute was made from a cave-bear bone and the campsite at which the flute fragment was excavated was in a cave that also contained skeletal remains of cave bears.
D.Flutes are the simplest wind instrument that can be constructed to allow playing a diatonic scale.
E.The cave-bear leg bone used to make the Neanderthal flute would have been long enough to make a flute capable of playing a complete diatonic scale.
答案是E，我选的是B
这个题是OG12上的，我做了两次都没有做对，呜呜，到底是怎么推出来的E啊
4、Newspaper editorial:
In an attempt to reduce the crime rate, the governor is getting tough on criminals and making prison conditions harsher. Part of this effort has been to deny inmates the access they formerly had to college-level courses.However, this action is clearly counter to the governor’s ultimate goal, since after being released from prison, inmates who had taken such courses committed far fewer crimes overall than other inmates.
Which of the following is an assumption on which the argument depends?
A.Not being able to take college-level courses while in prison is unlikely to deter anyone from a crime that he or she might otherwise have committed.
B.Former inmates are no more likely to commit crimes than are members of the general population.
C.The group of inmates who chose to take college-level courses were not already less likely than other inmates to commit crimes after being released.
D.Taking high school level courses in prison has less effect on an inmate’s subsequent behavior than taking college-level courses does.
E.The governor’s ultimate goal actually is to gain popularity by convincing people that something effective is being done about crime.
这个题答案选C，我选A，不懂啊啊啊
5、From 1980 to 1989, total consumption of fish in the country of Jurania increased by 4.5 percent, and total consumption of poultry products there increased by 9.0 percent.During the same period, the population of Jurania increased by 6 percent, in part due to immigration to Jurania from other countries in the region.
If the statements above are true, which of the following must also be true on the basis of them?
A.During the 1980’s in Jurania, profits of wholesale distributors of poultry products increased at a greater rate than did profits of wholesale distributors of fish.
B.For people who immigrated to Jurania during the 1980’s, fish was less likely to be a major part of their diet than was poultry.
C.In 1989 Juranians consumed twice as much poultry as fish.
D.For a significant proportion of Jurania’s population, both fish and poultry products were a regular part of their diet during the 1980’s.
E.Per capita consumption of fish in Jurania was lower in 1989 than in 1980.
这个题为啥选E？ | 
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发表于 2011-8-17 11:17:29
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