哈哈直播的人比较少~不是不想搭理你哈老师~ 讲得非常好滴

I like D better here. E introduces the word "possibly" which has a different meaning than "it can serve." The "it can" means it is, really, while "possibly" means it might. Not the same thing. And the original sentence uses "can" so I want to preserve the meaning.

Also the construction "in fact possibly serving" is awkward.

a is wrong because of the participle 'placing', which wrongly indicates that this trend is already placing more women in leadership positions.
c is wrong because the relative pronoun 'which' is placed in a position where it must refer to 'women'. this is wrong for 2 different reasons: (a) 'which' can't refer to people, and (b) according to the sentence, women don't place themselves in leadership positions; the trend does.

A: "enough for xxx to happen" is a threshold. this is going to be some EXACT boundary at which something starts to happen.
paired with "quite possibly", this creates a contradiction.

其实如果单看语法的话感觉b选项犯了平行错误，than后面应该也是sth do才对，但是如果加上意思的话其实就可以忽略语法了，因为明显就是livestock和wild animal平行。gmat还是重语义轻语法的

a选项2个it指代不同

不懂，之前说有20%的人是不必要做手术的，然后新的测试减少了不必要的手术，那就是能将不用做手术的分辨出来。但是答案B又说这个测试的误判是将没病的判成有病的，这不是和题干相矛盾了吗？

题目看错，我看成了礼拜一之后回家，题意是礼拜一当天回家。0.8*0.8*0.2=0.128

解析为什么感觉总是刚好避开最大考点呢。。。。

condemn是谴责 commend是赞扬

geographical isolation 定位第二段第二句 后面有同位语从句: an isolation that limited both cultural contact and exposure to European diseases

典型的CR题型，问【A】是否能导致【B】。反驳【A导致B】的办法其一就是即使【A】不发生，【B】也存在

Ron:that doesn't work, because "they know" isn't in the first part. if a construction can be omitted, then the same construction should exist elsewhere in the sentence. here, it doesn't; the omitted portion would be assumed to correspond to "demographers have to know", which doesn't make any sense.

这个公司的 strategy（或者goal）在于max整体利润，公司推出新产品达成这个strategy有2种方式，1.把价格提高到最高；2.低于最大可盈利的价格（即1中的价格）。经过作者的比较觉得2比较能够达到目的。在第一个黑脸中，阐释的就是为什么公司要设置这个strategy（为了获得竞争优势）+方法1（把价格提到最高）。之后diss了方法1，提出了方法2（第二个黑脸的表达也是 方法2+为了达到的strategy，也就是max利润）。 C选项没有纠缠2个方法在黑脸部分的作用，主要强调的是公司对于新产品的策略，即max profit。E中公司的目标一致都没有变，一直都是max profit。这一题分清楚作者论证的主次很重要！

In the last decade, this approach has become a critical social policy issue, as large numbers of private-sector firms and industries as well as federal, state, and local governmental entities have adopted comparable worth policies or begun to consider doing so.

Comparable worth, as a standard applied to eliminate inequities in pay, insists that the values of certain tasks performed in dissimilar jobs can be compared.

状语从句的省略：
1）两点省略要求：
第一点：逻辑主语等于句子主语
第二点：从句的谓语必需是be（没要求主句谓语也必需是be！换句话说状从的省略可以看成是省略了一个be），且从句主语和谓语要么同省，要么同留。
2）形式
正确形式: 表示时间/条件/转折/让步的连词(when/while/if/unless/although/even though/even if) + 形容词短语/-ing短语/-ed短语

B选项：是特别的，因为它关注了revolution之前的时期：原文提到它是特别的，但原因并不是因为它关注AR之前的时期。

atypical 非典型的