今儿又到我值班了~~表示心中很欢乐 虽然乔帮主去世我很伤心
下面是今日作业：
45. Often patients with ankle fractures that are stable, and thus do not require surgery, are given follow-up x-rays because their orthopedists are concerned about possibly having misjudged the stability of the fracture. When a number of follow-up x-rays were reviewed, however, all the fractures that had initially been judged stable were found to have healed correctly. Therefore, it is a waste of money to order follow-up x-rays of ankle fractures initially judged stable.
Which of the following, if true, most strengthens the argument?
(A) Doctors who are general practitioners rather than orthopedists are less likely than orthopedists to judge the stability of an ankle fracture correctly.
(B)Many ankle injuries for which an initial x-ray is ordered are revealed by the x-ray not to involve any fracture of the ankle.
(C) X-rays of patients of many different orthopedists working in several hospitals were reviewed.
(D) The healing of ankle fractures that have been surgically repaired is always checked by means of a follow-up x-ray.
(E) Orthopedists routinely order follow-up x-rays for fractures of bones other than ankle bones.
46. A study of marital relationships in which one partner's sleeping and waking cycles differ from those of the other partner reveals that such couples share fewer activities with each other and have more violent arguments than do couples in a relationship in which both partners follow the same sleeping and waking patterns. Thus, mismatched sleeping and waking cycles can seriously jeopardize a marriage.
Which of the following, if true, most seriously weakens the argument above?
(A) Married couples in which both spouses follow the same sleeping and waking patterns also occasionally have arguments that can jeopardize the couple's marriage.
(B) The sleeping and waking cycles of individuals tend to vary from season to season.
(C) The individuals who have sleeping and waking cycles that differ significantly from those of their spouses tend to argue little with colleagues at work.
(D) People in unhappy marriages have been found to express hostility by adopting a different sleeping and waking cycle from that of their spouses.
(E) According to a recent study, most people's sleeping and waking cycles can be controlled and modified easily.
47. In the past most airline companies minimized aircraft weight to minimize fuel costs. The safest airline seats were heavy, and airlines equipped their planes with few of these seats. This year the seat that has sold best to airlines has been the safest one-a clear indication that airlines are assigning a higher priority to safe seating than to minimizing fuel costs.
Which of the following, if true, most seriously weakens the argument above?
(A) Last year's best-selling airline seat was not the safest airline seat on the market.
(B) No airline company has announced that it would be making safe seating a higher priority this year.
(C) The price of fuel was higher this year than it had been in most of the years when the safest airline seats sold poorly.
(D) Because of increases in the cost of materials, all airline seats were more expensive to manufacture this year than in any previous year.
(E) Because of technological innovations, the safest airline seat on the market this year weighed less than most other airline seats on the market.
48. Editorial: An arrest made by a Midville police officer is provisional until the officer has taken the suspect to the police station and the watch commander has officially approved the arrest. Such approval is denied if the commander judges that the evidence on which the provisional arrest is based is insufficient. A government efficiency expert has observed that almost all provisional arrests meet the standards for adequacy of evidence that the watch commanders enforce. The expert has therefore recommended that, because the officer s' time spent obtaining approval is largely wasted, the watch commander's approval no longer be required. This recommendation should be rejected as dangerous, however, since there is no assurance that the watch commanders' standards will continue to be observed once approval is no longer required.
In the editorial, the two portions in boldface play which of the following roles?
(A) The first is a claim, the accuracy of which is disputed by the editorial; the second is a conclusion drawn in order to support the main conclusion of the editorial.
(B) The first is an observation that the editorial disputes; the second is a conclusion that was drawn from that observation.
(C) The first is a finding that was used in support of a proposal that the editorial opposes; the second is a judgment that was based on that finding and in turn was used to support the proposal.
(D) The first is a fin ding introduced to support the main conclusion of the editorial; the second is that main conclusion.
(E) The first is a conclusion, the evidence for which the editorial evaluates; the second is part of the evidence cited in favor of that conclusion.
The following appeared as part of an article in a computer magazine.
”A year ago Apex Manufacturing bought its managers computers for their homes and paid for telephone connections so that the managers could access Apex computers and data files from home after normal business hours. Since last year, productivity at Apex has increased by 15 percent. Other companies can learn from the success at Apex: given home computers and access to company resources, employees will work additional hours at home and thereby increase company profits.”
贴一道数学题（看看大伙儿做对了没~细心细心）：
一天，有个年轻人来到小米步童鞋店里买了一双鞋子。这双鞋子成本是15元，标价是21元。结果是这个年轻人掏出50元要买这双鞋子。小米步童鞋店当时没有零钱，用那50元向街坊换了50元的零钱，找给年轻人29元。但是街坊后来发现那50元是假钞，小米步童鞋店无奈之下，还了街坊50元。
现在问题是：小米步童鞋店在这次交易中到底损失了多少钱？
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发表于 2011-10-6 19:41:26
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