提问： 王文静老师，我想问个关于',＋doing'和and的问题，下面整理的问题，我都是在这个地方出现犹豫或者选错,真的是屡做屡错，字有点多，麻烦老师看下啦 Q849是一个句子＋doing的结构，letting引导的是一个对前面动作进行补充解释的动作，与前面的句子是有关系的，所以不能用and去连接，因为and连的是相互独立的没有关系的动作或者事情 Q851 gives mouth和displace grasses并列，造成的结果用rendering作为引导跟在后面，也算是补充解释 Q862也是句子＋,＋doing作为前面一整个句子的补充解释 但是问题来了，Q858 B选项，south are hunting crops and therefore raising这个为什么能对? and不是连接相互独立的两个部分吗，那therefore就是表示因果关系的啊，这不是矛盾了吗，还是这道题目主要的考点不在这里而在于平行，所以有瑕疵也是可以容忍的? Q 865虽然正确选项B可以通过其他考点排除，但是'overcompensating，growing'为啥不好呢，growing an extra one or two不能作overcompensating的补充解释吗，这里有必须选and不选doing,doing的理由吗？

这题完全不知道怎么做，看了答案也没明白

If n is the product of the integers from 1 to 20 inclusive, what is the greatest integer k for which 2^k is a factor of n? A. 10 B. 12 C. 15 D. 18 E. 20

Despite the increasing number of women graduating from law school and passing bar examinations, the proportion of judges and partners at major law firms who are women have not risen to a comparable extent. (A) the proportion of judges and partners at major law firms who are women have not risen to a comparable extent (B) the proportion of women judges and partners at major law firms have not risen comparably (C) the proportion of judges and partners at major law firms who are women has not risen comparably (D) yet the proportion of women judges and partners at major law firms has not risen to a comparable extent (E) yet the proportion of judges and partners at major law firms who are women has not risen comparably

我觉得我的问题是自己做的时候思路不是很清楚。 我现在有上十月份的机经班，然后我在跟着老师分析的时候我就是比较清楚，然后正确率就比我平时自己做的时候高很多。 我平时做prep之后也会听自主答疑，然后找问题的思路，但是对自己没有很深入。我要怎样才能就是让思路变得更清晰一点呢？ 因为我是大四在读学生，平时除去上课时间，晚上有时间还有平时抽出来的时间可以复习GMAT. 然后我还有一个月就考试了，然后我制定了一下计划，希望老师帮我改一下。 1. 再重新看一遍OG,着重看讲解，搞懂里面的语法讲解，总结出OG里面的语法知识和做题思路。用一个星期。 2. 每天练一篇OG的阅读精读和作文。 3. 第二个星期专项练习 CR, RC,SR,PS,DS. 4. 第三个星期做PREP和GWD， 然后做专项分析。 5. 第四个星期做计时的全 GWD set，模考当天考试的情况，找出这个考试当时可能会出现的问题。

不懂这题的逻辑，求解！ Kernland imposes a high tariff on the export of unprocessed cashew nuts in order to ensure that the nuts are sold to domestic processing plants. If the tariff were lifted and unprocessed cashews were sold at world market prices, more farmers could profit by growing cashews. However, since all the processing plants are in urban areas, removing the tariff would seriously hamper the government’s effort to reduce urban unemployment over the next five years. Which of the following, if true, most seriously weakens the argument? A. Some of the by-products of processing cashews are used for manufacturing paints and plastics. B. Other countries in which cashews are processed subsidize their processing plants C. More people in Kernland are engaged in farming cashews than in processing them. D. Buying unprocessed cashews at lower than world market prices enables cashew processors in Kernland to sell processed nuts at competitive prices. E. A lack of profitable crops is driving an increasing number of small farmers in Kernland off their land and into the cities.

Since February, the Federal Reserve has raised its short-term interest rate target five times, and (because of the economy's continued strength, analysts have been predicting for weeks that the target will) be raised again in Novermner. A. because of the economy's continued strength, analysts have been predicting for weeks that the target will B. with the economy's strength continuing, analysts predicted for weeks that the target C. because the economy continues strong, analysts predicted for weeks that the target would D. due to the economy's continued strength, analysts have been predicting for weeks that the target E. due to the fact of the economy's continued strength, analysts predicted for weeks that the target will 错选了C，答案给的A，请老师对比一下这两个选项。谢谢。

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？

英老师，我准备9.10第一次考gmat，做专区里面的模拟题，数学错题在8个左右，语文正确率太低了，才30%，而且还超时~语法题正确率最低。读题很慢，很多文章还读不懂。现在就是在小班专区里面做题，听解答，麻烦英老师给我一些复习建议。谢谢老师！！

Scientists have observed large concentrations of heavy-metal deposits in the upper twenty centimeters of （Baltic Sea sediments, which are consistent with the growth of industrial activity there）. (A) Baltic Sea sediments, which are consistent with the growth of industrial activity there (B) Baltic Sea sediments, where the growth of industrial activity is consistent with these findings (C) Baltic Sea sediments, findings consistent with its growth of industrial activity (D) sediments from the Baltic Sea, findings consistent with the growth of industrial activity in the area (E) sediments from the Baltic Sea, consistent with the growth of industrial activity there 这题答案是D，但是觉得D的表达很不高效，当时就排除了。Review也没太看明白，请老师讲解一下

In recent years cattle breeders have increasingly used crossbreeding, (in part that their steers should acquire certain characteristics) and partly because crossbreeding is said to provide hybrid vigor. (A) in part that their steers should acquire certain characteristics (B) in part for the acquisition of certain characteristics in their steers (C) partly because of their steers acquiring certain characteristics (D) partly because certain characteristics should be acquired by their steers (E) partly to acquire certain characteristics in their steers 看到划线后的and就想到平行，然后就错选了D，答案是E，不理解为什么，请老师讲解一下。谢谢！