A 选项中的 could 没有时态问题？怎么记得说 could 、would 在 GMAT 中都代表过去式。

额...还是看不懂colson非折扣店开业时其他店铺是折扣非折扣到底有怎样的关系？

E选项错啦！！！应该是 E--that is found in the Philippines and that, resembling。
我还想问，现在这个错的显示 “that is found in the Philippines, resembling”，是不是就可以算对了？

E 选项 it指代的是 the eyes，所以应该用 them 对吗？

被 E 的长句子绕晕了。/(ㄒoㄒ)/~~

Parallelism error - Between B and D. "weather conditions that cannot be foreseen" is correct over "not forseeable".
(Parallelism: can be carefully planned .... can not be forseen is present in B)

A: You cite pronoun ambiguity as the reason to eliminate answer choice A, but the GMAT has shown a surprising tolerance for pronoun ambiguity, so you shouldn't use that for elminations. Stragnely, the GMAT is almost completely intolerant of the word "being" (OG13 #100 is one of the few correct uses of the word being), so you can comfortably eliminate choices with "being".
【Manhattan GMAT Instructor from GMATCLUB】

首先，题目中结论和前提都跟生产部门没有关系，所以可以排除A和B选项；
其次，样品是most employees,总体是any employee，所以要质疑也是针对most employees，所以E不对D是答案

B 选项的翻译应该是 “没有一个城市中的公寓已经自主开展了能源节约计划” 吧？

no less...than 是多的意思是吧？
D是因为不是在讨论discord这个过程？

as opposed to是“相反”的意思，instead of是“而不是”的意思

【A】... students boycotted classes in a one-day strike to protest a law that ...Now everything after 'that' is telling us more about that particular law.
What does the sentence tell us about the law? It tells us the following:
The law requires them to contribute $330 a year toward the cost of higher education, instead of the $7 per year required previously.
This modifies the law. A part of it cannot refer back to the students, a noun from which it is very far.

转自 https://gmatclub.com/forum/by-the-same-techniques-used-for-genetically-enhancing-91740.html

求老师指证是否正确。

A. The present participle modifier " making them..." needs a complete clause to refer to - it would then refer to the effect of the whole clause or just to the subject of the clause. However "By the same techniques used for genetically enhancing plants" is a prepositional phrase, not a clause, and therefore the present participle "making them..." cannot refer to this prepositional phrase.

连词so that必须连接两个句子。

选项B：that的位置不对。if students recognize and apply these skills, they will become more effective thinkers是two assumptions之一，因此，应该将其作为assumption的同位语从句，即，在整个句子身前加that。

A：with nearly 90,000 tons a year sold to foreign markets是独立主格。我们知道，过去分词短语表达被动语态，其表明的是“有九千多吨一年被卖到了国外的市场上”，这句话没有指明是“谁”在把这九千吨东西卖到国际市场中。

but 是连词，连接两个分句。
选项E：伴随状语placed with others of their species和其主句placed with others of their species之前不能出现副词then，只有if可以和then连接。

D. canals and eventually railroads reached into the region, with substantial supplies of coal being-" This somehow seems to imply that the canals and railroads reached into the region because of substantial supplies of coal were exported. Meaning issue"-INCORRECT.
E. as canals and eventually railroads reached into the region, substantial supplies of coal were-" 'as canals...' presents a reason as of why the substantial supplies of coal were exported."-CORRECT.