GWD6-16,20,21求教

多谢大侠了，万分感激~

Q16

Historian:  Newton developed mathematical concepts and techniques that are fundamental to modern calculus.  Leibniz developed closely analogous concepts and techniques.  It has traditionally been thought that these discoveries were independent.  Researchers have, however, recently discovered notes of Leibniz’ that discuss one of Newton’s books on mathematics.  Several scholars have argued that since the book includes a presentation of Newton’s calculus concepts and techniques, and since the notes were written before Leibniz’ own development of calculus concepts and techniques, it is virtually certain that the traditional view is false.  A more cautious conclusion than this is called for, however.  Leibniz’ notes are limited to early sections of Newton’s book, sections that precede the ones in which Newton’s calculus concepts and techniques are presented.

In the historian’s reasoning, the two boldfaced portions play which of the following roles?

A.     The first provides evidence in support of the overall position that the historian defends; the second is evidence that has been used to support an opposing position.

B.     The first provides evidence in support of the overall position that the historian defends; the second is that position.

C.     The first provides evidence in support of an intermediate conclusion that is drawn to provide support for the overall position that the historian defends; the second provides evidence against that intermediate conclusion.

D.     The first is evidence that has been used to support a conclusion that the historian criticizes; the second is evidence offered in support of the historian’s own position.

E.     The first is evidence that has been used to support a conclusion that the historian criticizes; the second is further information that substantiates that evidence.

The answer is D, 我觉得第一个粗体的是在支持historian’s argument，否则结论也无法推出阿

20

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special savings accounts in which up to $3,000 a year can be saved with no tax due on the interest unless money is withdrawn before the account holder reaches the age of sixty-five.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?

A.     A substantial number of Levaskans have withdrawn at least some of the money they had invested in the special accounts.

B.     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.

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

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

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

选D,但是D是说有更多人选择special accounts了，这不是support the argument了吗？

21An 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?

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

B.     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.

C.     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.

D.     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.

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

The answer is C, I don’t understand. I think the answer is B. Since the workers are not willing to work four days a week, their productivity is obviously lower than expected

16: D

第一个黑体部分说 在莱布尼兹同学发表观点之前。 莱同学看牛同学的东西并且记了笔记 －》 莱同学没有自己搞出来

第二部分说， 但是莱同学的笔记没记到微积分那章， 所以莱同学还是自己搞出来的。

第一个是作者反对的东西的证据， 第二个是结论的证据

20： D

说这个special account里的钱不少， 没错， 但是这些钱都是从别的长期帐号里转来的。

普通长期帐号 －》 特殊长期帐号。 整个的saving的钱数没什么影响

21： C

为啥都弄成10×4 不行呢？

C说那些10×4的效率高是因为在8×5的同学们不在的时候效率特别高

如果大家都10×4了，大家又开始喝咖啡聊天啥的， 就跟8×5一样了