Costs do not rise low/high (comparative forms are: lower/higher). The usage sounds awkward. Costs should rise little / much.
Please note that: lower is a comparative form of low. Lower is only be used with nouns that can be described as low. There is no clear rule for less/lower. Usually, you have to memorize the usage of less/lower for each situation. For example:

https://e-gmat.com/blogs/rejecting-the-apprenticeship-model-of-training%E2%80%A6gmatprep/

In this sentence, “belonging in the university” is verb-ing modifier that modifies social work education. Thus, the sentence implies that Edith Abbott was convinced of social work education. This social work education has a characteristic that it belongs in the university.

B选项错在哪里?

这么好的题目，老师讲一讲。要是考试，谁敢选A啊。

in turn 放前面和后面没区别是吗

这一题的前提是什么啊，a选项感觉没看懂

还有C选项，虽然OG上没提，但是时态是不是也错了呀？

老师，我想问一下，E选项：当使用opening modifier 时，要求opening modifier 后面要马上紧跟其modify 的对象； 在本题的in two letters to the historian tacitus(是否也可以作为open modifier，)后面跟的 subject 是 nephew， 变成了 nephew in two letters， 逻辑不对。我这样的理解错在哪呢？

续：如果理解成小公牛，那么小公牛就可以acquire呀

I am confused by the option c which is a basis, from my perspective, to achieve the "half total" goal in the stimulus. If the recyclable is not adequate enough for the intention to reduce the number of truckloads to the half, how could the final goal be achieved?

D选项漏打一个to吧，given money to

well know 为什么要放在 as 的后面？

这道题是我最讨厌的GMAT题，没有之一！不仅因为错了两遍。

i am aware that discounts are available this weekend.
--> i know that there ARE discounts, but i don't necessarily know the specifics.
i am aware of the discounts available this weekend.
--> i actually know the specifics (percentages or whatever) of the discounts.

they were as...as they are 根据were和are的不同来进行时间上的比较。E选项没有这个效果。

求老师分析一下AC，群众的呼声很高啊

【提问】老师，我感觉AB选项基本都是差不多的，您讲的那个one day 的问题，我感觉one day是个时间状语吧，应该是one day may be partner吧？为什么one day一定要和compete在一块儿呢？谢谢