平行没看清楚，果然要静下心的

(E) 正确, to find… to defend…or to communicate…形式对应，三者并列平行 理解错了

many schools do not have, or are likely to have=many schools do not have, or many schools are likely to have，that's why not后面跟nor不跟or
nor和or/and一样是连词，that's why D选项后面跟了主语they，有两个独立的句子还是对的，因为nor是连词，且是并列连词！！
FANBOYS：for, and, nor, but, or, yet, so

默念：遇到FANBOYS for and nor but or yet so 的句子，拆开独立的看～ not不要遗漏。

In fact, in 1970 the SBA explicitly stated that their main goal was to increase the number of minority-owned businesses
问的是in 1970 ，不是1970s
细节

头大，第二次还是错，对A最大的疑问是more than all the North American Great Lakes combined到底是什么成分；
Ron说“more than all the North American Great Lakes combined”作定语修饰“20 percent of the world's fresh water”，整个应该放到which的定语从句里面作为次级修饰语，和“holds … water“一起修饰贝尔加湖；看着还行，因为如果省略了中间的“which holds 20 percent of the world's fresh water”， “more than 五大湖”直接接到“贝尔加湖”后面就毫无意义了。
后面省略了动词do, 如果是👇这样应该就清楚了很多：
Siberia's Lake Baikal, which holds 20 percent of the world's fresh water more than （DO） all the North American Great Lakes combined=>贝加尔湖，它拥有世界上20%的淡水，比北美五大湖（拥有）的总和还要多

enhance preparation是错的，enhance和prepare是两件事情

(1)be geared to（ward） doing sth是固定搭配，表示对某事物加以调节以适合某种需要或达到某种水平或标准,或旨在做某事。 这里的to（ward）是介词，后面要跟动名词
(2)错选a，根据句意a complex修饰的是center，但主语依然是programs，需要复数
(3)句意平行，enhance performance, 不能说enhance preparation, 所以只有enhance和prepare才平行
prepare sb for sth使某人为某事做好准备
preparation for sth为某事做准备

C。 language is produced by process and is understood by process.
and前的部分和选项A相同，主被动之间可认为没什么区别。但and身后的部分不对。过程不能发出“理解语言”这一动作，只能让语言变得可以理解。

E选项：代词they的指代对象在语法上只能是researchers，因为volunteers’已经是所有格了，变为了形容词，不能被代词指代。但是they在逻辑上应该指的是志愿者

gmat中看到wehre尽量不要选，介词+which 优于where

as身后直接为“in the most other developed countries”这一状语，说明省略了主句部分，但前面的主句部分直接copy过来就成了“Linking arrangements between secondary schools and the workplace never evolved in the most other developed countries”。其字面意思为“学校和工作的联系在其他发达国家也从未发展”。但合理的意思应该是在美国没发展，但在别的国家发展了。

即便c选项在语法上无错误，但扭曲的原句语义

同时省略 could be, reduce 应用被动

无逗号 v-ing 和 无逗号+从句 都修饰就近名词，因此advocating修饰reformers没问题

as the means of 固定搭配

“continue to do” means “start doing something again that was previously interrupted”, whereas “continue doing” means “to carry on the same thing you have already been doing”.

E选项，and前后不平行，这是因为，前者是同位语，后者是定语，两者的功能不同（如果两者都是定语，则可以平行），所以不能用and连接。
****and做连接词，功能结构都必须平行***

【Standard deviation and Mean 类型题】

mean=（70+ 75+ 80+ 85+ 90+ 105+ 105+ 130+ 130+ 130）/10=100;
1 standard deviation 即范围在[100-22.4,100+22.4]------>[77.6,122.4] 找小于这个区间的数，只有2个；

took 4 freaking 4 mins to get this questions right. "CLEARLY" ---not so clear to me lol lol

choice a is a run-on - it tries to have two main verbs without using any sort of subordinating element. if you take out modifiers, adjectives, etc., you're left with the following: the settlements were built with structures were connected. that's bad.

choice b is correct: it uses a nonessential modifier set off by commas ('of up to 600 rooms each'), which, if eliminated, yields the intact and legitimate sentence ...carefully engineered structures, connected by... (with another nonessential modifier).

choice c:
- 'scale of' doesn't make sense
- you can't say 'each that had...' (can't follow 'each' with a relative pronoun - if you're going to use a relative pronoun, it has to come directly after the thing it's trying to modify)
- no justification for using the past perfect ('had been') - that verb, if there's a verb there at all, should be in the simple past (the same tense as everything else in the sentence, because everything described in the sentence is contemporaneous)
- it doesn't make sense to use 'each' AFTER the comma, because it's not true that each structure was connected with a road system. instead, the road system connected all of the structures with each other, which is nowhere close to the same thing. (having 'each' BEFORE the comma makes sense, because it's actually true that each of the structures comprised up to 600 rooms.)
analogy:
the USA comprises 50 states, each of which is united by a federal government --> wrong (the implication is that each state has its own federal government)
the USA comprises 50 states, all of which are united by a federal government --> correct
the USA comprises 50 states, (all) united by a federal government --> correct, whether you have 'all' or not

choice d:
- 'scale of' doesn't make sense
- the use of AND sets up ostensible parallelism, but the two structures given aren't parallel (one starts with of and the other with with)

choice e is also a run-on sentence (you'll see this if you reduce it to its 'skeleton', a la choice a)

我还以为freezer是品牌名呢。。

D 第一点 are在前面找不到平行的结构 如果要用are的话 前面应该是 prices of xxx are xxxx than they are.....
第二点 我是从指代上发现的 因为虽然都是prices 但其实不是同一个prices 应该用those 来描述一个new copy 不知道对不对呢