if only because是一个习惯用语 表示for no better reason than that
I clean the kitchen floor because it's dirty. = I do the cleaning for this reason: The floor is dirty at that time.

I clean the kitchen floor
only
because it's dirty. = I do the cleaning for this reason, and only this reason; I don't do it for any other reason.

同位语太长了

a 无关 C莫名出现捕食白脚老鼠的 D莫名出现喂食一样的东西 E 莫名出现传播给人类的细菌，现在研究的是ticks被感染的数量不是人

要注意两个词区别railway highway congestion

if you say 'on the basis of x', that is usually taken as an acknowledgment that x has actually occurred. so choice a makes it sound as if building large new hospitals successfully avoids duplicating facilities. that's not true, of course: the thrust of the sentence is that the new hospitals are duplicates, and that's the problem.

“所以说，C项并未改变句子中心，而是将句子改到了一个很好很稳的状态。改前句子的中心其实是不稳的！nevertheless前句子“重”，后面因为没有谓语的原因稍显“轻”。but前后形成鲜明对比。为了与but前主谓齐全的表述平行对称，but之后也要用这种主谓齐全的句子来表述。强调do，只是为了强调转折后的句子内容。”

摘录一个CD牛牛的发言 “关于这个题我要说的是，语法题语义为王是我做了这么多题最深的感悟。这个题我上去就排除了ABE，因为这个句子要告诉你什么呢？Dolphins lack vocal cords，但是！注意，其实原句要告诉你的重在转折之后的内容，就是but they do create sounds。从ABE选项里，你也可以看出句意中的转折。这样才能体现GMAT中句子的平行对称。再加上producing做状语，修饰主谓，于是这个句子完美了！”

2/5很刷存在感了

their objectives
intended 和 with intent to
with objectives being...

pronoun, modifier
processes by which it is understood想起了the last day that they are scheduled to collect...以后看到这种句子还是把语序倒过来看得清楚一点, 警惕这种句型！！！

用排除法选择A。个人觉得这道题出的有问题。L的work和B&B最明显的不同就是L directly deals with women's status. 但是women's status是不是一个所谓的larger issue其实原文中没有提到。make little effort 说的是是否在某项内容上下功夫，和 issue is large or small是没有任何关系的。

为什么expect身后不能用宾语从句呢？

求讲解

脑补是一个等差数列，哪来这么多脑补嗯？？？

嗯。再次🙃了。。。

modifier:
c选项，by the end of the decade修饰的是project这个动作
estimate...at√
project at？？？

is possible和infer不同！只要与题目信息兼容即可（哪怕可能性不大）

Though and although- have meaning as ‘despite’. ‘Although’ is preferred at beginning of the sentence and ‘though’ is preferred in middle of the sentence; ‘though’ can be used at the end of the sentence; ‘although’ cannot be used at end of the sentence,

翻了牛津词典，chance的定义是a possibility of sth happening, especially sth that YOU WANT, 这里death和risk搭配要合适一些
half...as those/than those -- non-idiomatic
B&C中的do虽然没有错但是wordy

没有看懂题……………………