Gigi13中有几题逻辑不太明白，恳请牛牛们帮忙看看~~多谢多谢~~

Gigi13中有几题逻辑不太明白，恳请牛牛们帮忙看看~~多谢多谢~~

Q14:

Political Advertisement:

Mayor Delmont’s critics complain about the jobs that were lost in the city under Delmont’s leadership.  Yet the fact is that not only were more jobs created than were eliminated, but the average pay for these new jobs has been higher than the average pay for jobs citywide every year since Delmont took office.  So there can be no question that throughout Delmont’s tenure the average paycheck in this city has been getting steadily bigger.

Which of the following, if true, most strengthens the argument in the advertisement?

1. The average pay for jobs created in the city during the past three years was higher than the average pay for jobs created in the city earlier in Mayor Delmont’s tenure.

2. Average pay in the city was at a ten-year low when Mayor Delmont took office.

3. Some of the jobs created in the city during Mayor Delmont’s tenure have in the meantime been eliminated again.

4. The average pay for jobs eliminated in the city during Mayor Delmont’s tenure has been roughly equal every year to the average pay for jobs citywide.

5. The average pay for jobs in the city is currently higher than it is for jobs in the suburbs surrounding the city.

答案是c。我选了a。

Q15:

Capuchin monkeys often rub their bodies with a certain type of millipede.  Laboratory tests show that secretions from the bodies of these millipedes are rich in two chemicals that are potent mosquito repellents, and mosquitoes carry parasites that debilitate capuchins.  Some scientists hypothesize that the monkeys rub their bodies with the millipedes because doing so helps protect them from mosquitoes.

Which of the following, if true, provides the most support for the scientists’ hypothesis?

1. A single millipede often gets passed around among several capuchins, all of whom rub their bodies with it.

2. The two chemicals that repel mosquitoes also repel several other varieties of insects.

3. The capuchins rarely rub their bodies with the millipedes except during the rainy season, when mosquito populations are at their peak.

4. Although the capuchins eat several species of insects, they do not eat the type of millipede they use to rub their bodies.

5. The two insect-repelling chemicals in the secretions of the millipedes are carcinogenic for humans but do not appear to be carcinogenic for capuchins.

答案是e。我选了c。

Q20:

Five years ago, as part of a plan to encourage citizens of Levaska to increase the amount of money they put into savings, Levaska’s government introduced special savings accounts in which up to $3,000 a year can be saved with no tax due on the interest unless money is withdrawn before the account holder reaches the age of sixty-five.  Millions of dollars have accumulated in the special accounts, so the government’s plan is obviously working.

Which of the following, if true, most seriously weakens the argument?

1. A substantial number of Levaskans have withdrawn at least some of the money they had invested in the special accounts.

2. Workers in Levaska who already save money in long-term tax-free accounts that are offered through their workplace cannot take advantage of the special savings accounts introduced by the government.

3. The rate at which interest earned on money deposited in regular savings accounts is taxed depends on the income bracket of the account holder.

4. Many Levaskans who already had long-term savings have steadily been transferring those savings into the special accounts.

5. Many of the economists who now claim that the government’s plan has been successful criticized it when it was introduced.

答案是d。我选了a。

Q21:

An overwhelming proportion of the most productive employees at SaleCo’s regional offices work not eight hours a day, five days a week, as do other SaleCo employees, but rather ten hours a day, four days a week, with Friday off.  Noting this phenomenon, SaleCo’s president plans to increase overall productivity by keeping the offices closed on Fridays and having all employees work the same schedule—ten hours a day, four days a week.

Which of the following, if true, provides the most reason to doubt that the president’s plan, if implemented, will achieve its stated purpose?

1. Typically, a SaleCo employee’s least productive hours in the workplace are the early afternoon hours.

2. None of the employees who work four days a week had volunteered to work that schedule, but all were assigned to it by their supervisors.

3. Working ten hours a day has allowed the most productive employees to work two hours alone each day in their respective offices relatively undisturbed by fellow employees.

4. Employees at SaleCo are compensated not on the basis of how many hours a week they work but on the basis of how productive they are during the hours they are at work.

5. Those SaleCo employees who have a four-day workweek do not take any of their office work to do at home on Fridays.

答案是c。我选了d。

Q32:

Proposal:  Carbon dioxide and methane in the atmosphere block the escape of heat into space.  So emission of these “greenhouse” gases contributes to global warming.  In order to reduce global warming, emission of greenhouse gases needs to be reduced.  Therefore, the methane now emitted from open landfills should instead be burned to produce electricity.

Objection:  The burning of methane generates carbon dioxide that is released into the atmosphere.

Which of the following, if true, most adequately counters the objection made to the proposal?

1. Every time a human being or other mammal exhales, there is some carbon dioxide released into the air.

2. The conversion of methane to electricity would occur at a considerable distance from the landfills.

3. The methane that is used to generate electricity would generally be used as a substitute for a fuel that does not produce any greenhouse gases when burned.

4. Methane in the atmosphere is more effective in blocking the escape of heat from the Earth than is carbon dioxide.

5. The amount of methane emitted from the landfills could be reduced if the materials whose decomposition produces methane were not discarded, but recycled.

答案是d。我选了c。

Q33:

Crowding on Mooreville’s subway frequently leads to delays, because it is difficult for passengers to exit from the trains.  Subway ridership is projected to increase by 20 percent over the next 10 years.  The Metroville Transit Authority plans to increase the number of daily train trips by only 5 percent over the same period.  Officials predict that this increase is sufficient to ensure that the incidence of delays due to crowding does not increase.

Which of the following, if true, provides the strongest grounds for the officials’ prediction?

1. By changing maintenance schedules, the Transit Authority can achieve the 5 percent increase in train trips without purchasing any new subway cars.

2. The Transit Authority also plans a 5 percent increase in the number of bus trips on routes that connect to subways.

3. For most commuters who use the subway system, there is no practical alternative public transportation available.

4. Most of the projected increase in ridership is expected to occur in off-peak hours when trains are now sparsely used.

5. The 5 percent increase in the number of train trips can be achieved without an equal increase in Transit Authority operational costs.

答案实际d。我选了c。

LZ使用过搜索功能查看过以前的讨论贴嘛？

不好意思我不太知道

怎么搜呢?是搜题号吗?

搜索的时候gigi13和tt31怎么区分呢?