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2007年GMAT考试最新逻辑推理仿真试题训练十(4)

2007-11-02 16:10

  16.Which of the following questions can be answered on the basis of the information in the passage above?

 。ˋ) Is the Postal Service as efficient as privately owned electric transmission services?
 。˙) If private operators were allowed to operate first-class mail services, would they choose to do so?
 。–) Do the electronic transmittal operators believe that the Postal Service makes a profit on first-class mail?
 。―) Is the Postal Service prohibited from offering electronic transmission services?
 。‥) Is the Postal Service expected to have a monopoly on electronic transmission?

  17.Lists of hospitals have been compiled showing which hospitals have patient death rates exceeding the national average. The data have been adjusted to allow for differences in the ages of patients.Each of the following, if true, provides a good logical ground for hospitals to object to interpreting rank on these lists as one of the indices of the quality of hospital care EXCEPT:

 。ˋ) Rank order might indicate insignificant differences, rather than large differences, in numbers of patient deaths.
 。˙) Hospitals that keep patients longer are likely to have higher death rates than those that discharge patients earlier but do not record deaths of patients at home after discharge.
 。–) Patients who are very old on admission to a hospital are less likely than younger patients to survive the same types of illnesses or surgical procedures.
 。―) Some hospitals serve a larger proportion of low-income patients, who tend to be more seriously ill when admitted to a hospital.
 。‥) For-profit hospitals sometimes do not provide intensive-care units and other expensive services for very sick patients but refer or transfer such patients to other hospitals.

  18.Teresa: Manned spaceflight does not have a future, since it cannot compete economically with other means of accomplishing the objectives of spaceflight.Edward: No mode of human transportation has a better record of reliability: two accidents in twenty-five years. Thus manned spaceflight definitely has a positive future.Which of the following is the best logical evaluation of Edward's argument as a response to Teresa's argument?

 。ˋ) It cites evidence that, if true, tends to disprove the evidence cited by Teresa in drawing her conclusion.
 。˙) It indicates a logical gap in the support that Teresa offers for her conclusion.
 。–) It raises a consideration that outweighs the argument Teresa makes.
 。―) It does not meet Teresa's point because it assumes that there is no serious impediment to transporting people into space, but this was the issue raised by Teresa.
 。‥) It fails to respond to Teresa's argument because it does not address the fundamental issue of whether space activities should have priority over other claims on the national budget.

  19.Black Americans are, on the whole, about twice as likely as White Americans to develop high blood pressure. This likelihood also holds for westernized Black Africans when compared to White Africans.Researchers have hypothesized that this predisposition in westernized Blacks may reflect an interaction between western high-salt diets and genes that adapted to an environmental scarcity of salt.Which of the following statements about present-day, westernized Black Africans, if true, would most tend to confirm the researchers' hypothesis?

 。ˋ) The blood pressures of those descended from peoples situated throughout their history in Senegal and Gambia, where salt was always available, are low.
 。˙) The unusually high salt consumption in certain areas of Africa represents a serious health problem.
 。–) Because of their blood pressure levels, most White Africans have markedly decreased their salt consumption.
 。―) Blood pressures are low among the Yoruba, who, throughout their history, have been situated far inland from sources of sea salt and far south of Saharan salt mines.
 。‥) No significant differences in salt metabolism have been found between those people who have had salt available throughout their history and those who have not.

  20.The following proposal to amend the bylaws of an organization was circulated to its members for comment.When more than one nominee is to be named for an office, prospective nominees must consent to nomination and before giving such consent must be told who the other nominees will be.Which of the following comments concerning the logic of the proposal is accurate if it cannot be known who the actual nominees are until prospective nominees have given their consent to be nominated?

 。ˋ) The proposal would make it possible for each of several nominees for an office to be aware of who all of the other nominees are.
 。˙) The proposal would widen the choice available to those choosing among the nominees.
 。–) If there are several prospective nominees, the proposal would deny the last nominee equal treatment with the first.
 。―) The proposal would enable a prospective nominee to withdraw from competition with a specific person without making that withdrawal known.
 。‥) If there is more than one prospective nominee, the proposal would make it

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