When people engage in activities that help others, their brain releases endorphins, the brain’s natural opiates, which induce in people a feeling of well-being. It has been suggested that regular release of endorphins increases people’s longevity. And a statistic on adults who regularly engage in volunteer work helping others shows that they live longer, on average, than adults who do not volunteer. However, that statistic would be what we would expect even if volunteering does not boost longevity, because___________ Which of the following most logically completes the argument? A In the communities studied, women were much more likely to do regular volunteer work than men were, and women tend to live longer than men do B The number of young adults who do regular volunteer work is on the increase C The feelings of well-being induced by endorphins can, at least for a time, mask the symptoms of various conditions and diseases, provided the symptoms are mild D It is rare for a person to keep up a regular schedule of volunteer work throughout his or her life E Some people find that keeping a commitment to do regular volunteer work becomes a source of stress in their lives 错选了C，答案给的A。A说女士比男士更可能做志愿活动，女士比男士活得长。这不是支持原文了么？可以题目不是应该驳斥吗？

报了617的考试，一战，关于复习计划有一些问题想请教英老师： 1.我考试时间应该是刚刚换库的时候，我平时做GWD数学一般错误不超过5个，这一个多星期数学应该怎样复习？请问是否有必要看前一个月的数学机经，以及怎样有效利用数学机经？ 2.刚刚开始做GWD模考，才做了4天，请问老师能否详细讲讲每次做完模考以后REVIEW的方法，是先把错误的题全部重做，再听答疑，还是每道题都听解释，尽可能吃透，或者是否有其他建议？谢谢！

For the farmer who takes care to keep them cool, （providing them with high-energy feed, and milking them regularly, Holstein cows are producing ） an average of 2,275 gallons of milk each per year. A. providing them with high-energy feed, and milking them regularly, Holstein cows are producing B. providing them with high-energy feed, and milked regularly, the Holstein cow produces C. provided with high-energy feed, and milking them regularly, Holstein cows are producing D. provided with high-energy feed, and milked regularly, the Holstein cow produces E. provided with high-energy feed, and milked regularly, Holstein cows will produce

Heavy commitment by an executive to a course of action, especially if it has worked well in the past, makes it likely to miss signs of incipient trouble or misinterpret them when they do appear. A. Heavy commitment by an executive to a course of action, especially if it has worked well in the past, makes it likely to miss signs of incipient trouble or misinterpret them when they do appear. B. An executive who is heavily committed to a course of action, especially one that worked well in the past, makes missing signs of incipient trouble or misinterpreting ones likely when they do appear. C. An executive who is heavily committed to a course of action is likely to miss or misinterpret signs of incipient trouble when they do appear, especially if it has worked well in the past. D. Executives’ being heavily committed to a course of action, especially if it has worked well in the past, makes them likely to miss signs of incipient trouble or misinterpreting them when they do appear. E. Being heavily committed to a course of action, especially one that has worked well in the past, is likely to make an executive miss signs of incipient trouble or misinterpret them when they do appear.

图发不上来，是一个半圆的隧道然后宽是20 The figure above shows the dimensions of a semicircular cross section of a one-way tunnel. The single traffic lane is 12 feet wide and is equidistant from the sides of the tunnel. If vehicles must clear the top of the tunnel by at least ½ foot when they are inside the traffic lane, what should be the limit on the height of vehicles that are allowed to use the tunnel? A. 5½ ft B. 7½ ft C. 8 ½ ft D. 9½ ft E. 10 ft

Vasquez-Morrell Assurance specializes in insuring manufacturers. Whenever a policyholder makes a claim, a claims adjuster determines the amount that Vasquez-Morrell is obligated to pay. Vasquez-Morrell is cutting its staff of claims adjusters by 15 percent. To ensure that the company’s ability to handle claims promptly is affected as little as possible by the staff cuts, consultants recommend that Vasquez-Morrell lay off those adjusters who now take longest, on average, to complete work on claims assigned to them. Which of the following, if true, most seriously calls into question the consultants’ criterion for selecting the staff to be laid off? (A) If the time that Vasquez-Morrell takes to settle claims increases significantly, it could lose business to other insurers. (B) Supervisors at Vasquez-Morrell tend to assign the most complex claims to the most capable adjusters. (C) At Vasquez-Morrell, no insurance payments are made until a claims adjuster has reached a final determination on the claim. (D) There are no positions at Vasquez-Morrell to which staff currently employed as claims adjusters could be reassigned. (E) The premiums that Vasquez-Morrell currently charges are no higher than those charged for similar coverage by competitors.

麻烦老师,针对我的复习思路,您看看,在复习计划和复习步骤上能做些调整吗? 多谢

若n和p是互不相同的正质数，则在N^4 p^3 和np这几个数哪一个数字恰好有四个正因子？ n^4 有5个 分别是1和4个n p^3 有4个 分别是1和3个p 我觉得np只有3个啊 1 n 和p 我也套用具体数字验证过 但是答案说np也有四个正因子 求老师解答 谢谢！

老师您好， 下面是我格式化的复习计划。 我的思路是先把OG做掉，我现在数学快做完了，然后做阅读，逻辑，语法。 再做模考题。 您给看看有什么需要改进的。 谢谢啦。

请忽略之前发的问题，19考，请赐教4道题

n is an positive integer, 2n=2*4*6*8*(2n-2)*2n, what is the greatest prime factor of (20)+(22)? A 19 B 23 C 29 D 31 E 37 我读不懂这个题 (20)+(22)这是什么意思啊？ 谢谢