我觉的B选项前半段只是顺序变了，主要的问题在于后面的那个从句， initiatives that try to relieve the congestion，应给不是 initiatives去try to relieve, 是the on-line service company announced a series of new initiatives这个行为的目的是to try to relieve，所以C选项是对的

理解了金子塔的性质则超级好解...金字塔是由正四棱椎组成,共有四个全等的等边三角形的侧面和一个正方形的底面组成,共有8条棱,及5个顶点

这个题的坑点在于，句意发现了证据evidence 之后，这个证据产生了什么样的影响和后果；而不是发现了一个什么样的证据；

我也没看懂，为什么 finding 不能作为证明的 subject, 毕竟从语法角度是没有问题的。但是很明显的是除了 A 以外所有的 agreement 都有问题。

这里我有个小问题。为什么“在标题泄露一点 information"就会被 读完完整故事的reader当成不 clever 的标题？

老师，我有点不太清楚这里“As criminal activity on the Internet becomes more and more sophisticated”的用法，as 在这里是做连词把 "as..."和“not only..."连接起来了么，后面没有 but 但是也可以和前面的”not only'连接起来?

D选项错在哪里呢？

定位：This became the prevailing view until after the Second World War, when studies of specific regions and towns revealed astonishing mortality rates ascribed to the epidemic

老师， 有两点没明白：
1）it was during his lifetime that...这是强调？所以几个选项中其实后半句是没有错的？
2)D中，具有该关系的两者为Anton Chekhov和his short stories，这是真的不太明白。

represent和provide一定是并列

A:In Choice A, use of as is incorrect because in the context of the sentence, as can mean because as well as while.
In addition, the sentence intends to convey that while A happens, B will happen. Hence, use of the verb will build is not correct as these verbs do not convey the sequence of the events clearly.
IDIOM:I usher X into A.

B选项的that做引导词是不是也不对呢？
如果B选项修改为earning them at a time when aviation was still so new that many of the planes she flew were，和E选项相比哪个更好呢？

A 中的the wolf population in the .....area 是不是 noun+prep+noun 的结构呢？如果是的，那么which 不是也可以修饰到 the wolf population吗？ 如果是这样的话，我觉得A可能是错在 the number上了 。the number of wolves/ the size of the wolve population 请大家指正。

记住 Ones 出现必然是指代前面出现过的noun，是同一批noun，这里就是指代无潮汐的some place

to them 和 to themselves 效果一样吗

to do 表目的 记住！要敏感

for the company for!!!!错

如果说C选项是倒装，那B选项也应该同理，应该是G.H.Hardy alone recognized they were brilliant，宾语前置，那but的转折就没有问题了？

A their无复数指代， B 少谓语动词，C their同a， E and并列结构不平行，and前少谓语动词