also, the word 'while' - which is sometimes used to indicate contrast - creates a strange ambiguity here: on first reading, it appears to suggest that the announcement (which took place in '68) happened during the summer of '67; this is the usual sense of 'while' occurring in this place in a sentence. (normally, if used to mark contrast, 'while' appears in front of a sentence.)

补充一个OG关于E选项的解释：Although is a conjunction and should not be followed by a finite clause with a subject, not by a principle.

E选项句子成分分析我理解错了，想问下，我以为which引导了一个定语从句修饰bricks，所以没有觉得这两句是平行关系。我没有看出来which这句和前面that bricks were formed from mud or clay,是平行从句。能让我知道我错哪儿了吗？多谢啦

所以其实和水流根本没有关系。在水流急的地方小螃蟹打洞不缠藤 不是因为他们打了洞 而是因为他们要换壳所以本来就不缠藤
哇这题真的是……

记录一下：XY偶数的概率为X是偶数或者y是偶数，所以是X偶数概率＋Y偶数概率，然而，XY都是偶数的概率被重复计算，所以要最后减掉一次。解答如下；X是偶数概率 为2/4，即1/2， Y是偶数概率为1/3，二者相加＝5/6，被重复的概率是X＝2或4时，y＝6，所以被重复的概率为两个1/4乘以1/3. 所以5/6减去2/12=4/6，即2/3.

我觉得logo只是一个诱因，一看到logo就会让人们想到自己的财务压力。如果压力小则给小费多；如果压力大则给小费少。所以B能支持。

只要区分开来early和later 这题就能做对

D有歧义

老师，cut的逻辑主语是plan还是executives呢？

老师，请问下您之前提过所有格形式会变成形容词的性质，导致不能被代词指代。但是为什么D项用了Elizabeth Barrett Browning's success，后面的her还是可以指代Elizabeth Barrett Browning呢？

if you don't like '...than was the case', you should learn to like it; this is one of those phrases that the gmat writers use to refer to concepts that don't fit under the usage constraints of traditional pronouns. (another popular one of these constructions is 'do so'.)

in the above sentence, the pronoun 'it' must necessarily refer to last year's attendance, not just attendance.
the problem in this post has the same issue: the pronoun 'it' must refer to more than ten times as much energy, not just energy - an interpretation that makes no logical sense. therefore, all answer choices containing the pronoun 'it' are wrong.

以下解释可能会有所帮助：
the pronoun 'it' is inappropriate, because 'it' must refer to the ENTIRETY of the noun phrase serving as an antecedent.
for instance, the following is an improper sentence: last year's attendance was ten thousand greater than it was this year

as be the case+prep这个结构到底怎么用，我看有不少题目都有这个结构，一个网络药店的题，还有个什么题目我忘了
貌似是prep后面的这个事情和主句的事情不需要严格平行。希望毕老师能够回答一下，谢谢！

老师， inseparable逻辑上应该修饰emotions，可是如果按照B选项换成定语从句以后变成了修饰phenomena，这样逻辑上是否有错误？谢谢。

我觉得D,E中的定语从句也使用错误了，proven records 没有在从句中充当任何成分。

没说一定是整数

注意题意。

属于从过去推测未来的unjustified assumption，我觉得是统计枚举类型-----------CQ：样本代表性或者样本数量问题，这里面的样本指的是将要倒闭downtown M商店的样本，所以答案应该是说明：downtown M商店样本和过去rebound商店相比的不同：
A 恰巧说了这种不同。

要保证太阳能和石油火力发电的cost-efficiency一致：

10年前：1桶油10刀，若发一度电需要：太阳能35刀，火力发电1桶油，则油价需升至35/桶

10年后：1桶油10刀，若发一度电需要：太阳能17.5刀，火力发电1桶油，则油价仅需升至17.5/桶
或
10年后：1桶油10刀，若发一度电需要：太阳能17.5刀，火力发电半桶油 ，则油价仍需升至35/桶
或
10年后：1桶油10刀，若发一度电需要：太阳能17.5刀，火力发电2桶油，则油价需降至8.75/桶
转自http://blog.sina.com.cn/s/blog_7ce2067c01013jll.html