求助

Jasmine10

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

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

A.   Typically, a SaleCo employee’s least productive hours in the workplaceare the early afternoon hours.
B.   None of the employees who work four days a week had volunteered to workthat schedule, but all were assigned to it by their supervisors.
C.   Working ten hours a day has allowed the most productive employees to worktwo hours alone each day in their respective offices relatively undisturbed byfellow employees.
D.  Employees at SaleCo are compensated not on the basis of how many hoursa week they work but on the basis of how productive they are during the hoursthey are at work.
E.   Those SaleCo employees who have a four-day workweek do not take any oftheir office work to do at home on Fridays.
为什么答案是c呢？

GWD-9-Q37:

Researcherstook a group of teenagers who had never smoked and for one year tracked whetherthey took up smoking and how their mental health changed. Those who begansmoking within a month of the study’s start were four times as likely to bedepressed at the study’s end than those who did not begin smoking. Sincenicotine in cigarettes changes brain chemistry, perhaps thereby affecting mood,it is likely that smoking contributes to depression in teenagers.

Which ofthe following, if true, most strengthens the argument?

A.   Participants who were depressed at the study’s start were no morelikely to be smokers at the study’s end than those who were not depressed.

B.   Participants who began smoking within a month of the study’s start wereno more likely than those who began midway through to have quit smoking by thestudy’s end.

C.   Few, if any, of the participants in the study were friends or relativesof other participants.

D.  Some participants entered and emerged from a period of depressionwithin the year of the study.

E.   The researchers did not track use of alcohol by the teenagers.

------------------------------------------------------------------------------------------------------------

想不通为什么答案是a？

求nn解答。。。。谢谢各位了。

agan14404102

make sense

witchingwang

bendrift

C.   Working ten hours a day has allowed the most productive employees to worktwo hours alone each day in their respective offices relatively undisturbed byfellow employees.
---因为高效率的员工之所以高效率是因为有两个小时独自工作而不被其他员工打扰.
     若所有员工都统一到十个小时,这个特殊点就被消除了,原来高效率的独特性就没有了.
     所以President的plan是有缺陷的.

Jasmine10

GWD-9-Q38:

In Januaryof last year the Moviemania chain of movie theaters started propping itspopcorn in canola oil, instead of the less healthful coconut oil that it hadbeen using until then. Now Moviemania is planning to switch back, saying thatthe change has hurt popcorn sales. That claim is false, however, sinceaccording to Moviemania’s own sales figures, Moviemania sold 5 percent morepopcorn last year than in the previous year.

Which ofthe following, if true, most strongly supports the argument againstMoviemania’s claim?

A.   Total sales of all refreshments at Moviemania’s movie theatersincreased by less than 5 percent last year.

B.   Moviemania makes more money on food and beverages sold at its theatersthan it does on sales of movie tickets.

C.   Moviemania’s customers prefer the taste of popcorn popped in coconutoil to that of popcorn popped in canola oil.

D.  Total attendance at Moviemania’s movie theaters was more than 20percent higher last year than the year before.

E.   The year before last, Moviemania experienced a 10 percent increase inpopcorn sales over the previous year.

想不通为什么答案是a？

求nn解答。。。。谢谢各位了。