Among people who experience migraine headaches, some experience what doctors call "common" migraines, whereas others experience "classical" migraines. Siblings and spouses of common migraine sufferers are themselves twice as likely as the general population to experience common migraines. Siblings of classical migraine sufferers are four times more likely than the general population to experience classical migraines, whereas spouses of classical migraine sufferers are no more likely than the general population to experience such headaches.
The information above provides the most support for which of the following hypotheses?
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∙ASusceptibility to classical migraines is more dependent on hereditary factors than is susceptibility to common migraines.  分析A选项
∙BUnmarried adults are more likely to suffer from classical migraines than they are to suffer from common migraines.  分析B选项
∙CPeople who do not experience migraine headaches are unlikely to have spouses who are migraine headache sufferers.  分析C选项
∙DChildren of people who suffer from common migraines are not more likely than the general population to experience a common migraine.  分析D选项
∙EBetween one-quarter and one-half of the general population suffer from either common or classical migraine headaches.  分析E选项
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对于common m：兄妹〔遗传〕和夫妻都是2倍
对于classical m：兄妹是4倍,夫妻是相同可能性〔1倍〕
A说的是classical与遗传有关〔4倍〕>common与遗传有关〔2倍〕
B错了,说反了2>1
C推不出
D错了,会more likely,与遗传有关
E推不出
Susceptibility易受影响 hereditary遗传
Over the last five years, demand for hotel rooms in Cenopolis has increased significantly, as has the average price Cenopolis hotels charge for rooms. These trends are projected to continue for the next several years. In response to this economic forecast, Centennial Commercial, a real estate developer, is considering a plan to convert several unoccupied office buildings it owns in Cenopolis into hotels in order to maximize its revenues from these properties.
Which of the following would it be most useful for Centennial Commercial to know in evaluating the plan it is considering?
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∙AWhether the population of Cenopolis is expected to grow in the next several years  分析A选项
∙BWhether demand for office space in Cenopolis is projected to increase in the near future  分析B选项
∙CWhether the increased demand for hotel rooms, if met, is likely to lead to an increase in the demand for other travel-related services  分析C选项
∙DWhether demand for hotel rooms has also increased in other cities where Centennial owns office buildings  分析D选项
∙EWhether, on average, hotels that have been created by converting office buildings have fewer guest rooms than do hotels that were built as hotels 
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原文中,plan--convert several unoccupied office buildings it owns in Cenopolis into hotels .goal--maximize its revenues from these properties.
评价题正确答案需要与plan高度相关,plan出现的关键词unoccupied office buildings和hotels .
A, population明显无关.C other travel-related services明显无关.Din other cities,讨论对象转移.E,hotels that were built as hotels无关.
其实原文还暗含了比较,要增加收益是相对于原来写字楼的用途而言,所以答案猜测要么和hotel收入有关,要么和office收入有关.
The use of radar detectors in commercial vehicles was banned because commercial truck and bus drivers were using these devices to drive faster than the posted speed limit without fear of arrest. Since drivers of noncommercial vehicles also use radar detectors and since speeding decreases safety for any vehicle, use of radar detectors should also be banned in noncommercial vehicles to increase safety.
Which of the following, if true, most strongly supports the argument above?
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∙AThe average noncommercial-vehicle driver is involved in less long-distance driving than is the average commercial-vehicle driver.  分析A选项
∙BIn many places airplanes or helicopters are used rather than radar to locate vehicles traveling faster than the posted speed limit.  分析B选项
∙CThe ban on radar detectors in commercial vehicles has been effective in deterring them
from speeding.  分析C选项
∙generatedDTraffic accidents involving a truck or bus generally pose a greater threat of injury or death than do other accidents.  分析D选项
∙ERadar detectors are sometimes set off by devices other than the law enforcement devices that the radar detectors were built to detect.  分析E选项
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C
Traveler: Southern Airways has a far worse safety record than Air Dacentaria over the past few years, in terms of both the frequency of accidents and the severity of accidents. Therefore, although Air Dacentaria is slightly more expensive, I will choose it over Southern Airways for my flight from Pederton to Dacenta, since it is worth paying extra to have a safer flight.
Which of the following, if true, casts the most serious doubt on the traveler's argument?

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