1）Sequences of actions are normally in parallel. If two description happened at the same time, they shouldn't be parallel. Instead, use "comma + ing" to modify.
2）", then ing…" is NOT right, because the action of "comma + ing" is in the same time-frame as the main verb.

一个很简单但又容易错的题，GMAT的数学，细心再细心哈。-25，-24，-23，-22.。。。。22，23，（24是没有的）。

为什么这题考点不在主被动呀，B选项中使用被动形式就省略了动作合理发出者呀？

after falling还是看成一个简单的状语比较好

从N的条件可知分数可能的结果是5，4，3，2，1， 共15分。三个队共有15分，没有一个队超过6分，则任两个队的分不会超过12分，得分最少的队最少为15-12=3

总成本等于数量✖️单价，单价虽然增加，但是数量减少，a所提到的所有issue 发行的成本可能还是不变的。而每本杂志价格没有变，总成本也不变。因此a的利润没变。

哎 太难想到了

360+6%(T-1000)=8%T
2%T=300
T=15000

读句子，E有断句，导致意思不容易被理解。

看题时最绕的是名字。。。看半天要分清楚两个地方，还要分清楚两个地方的酒店。。。

them

两句话有逻辑关系不能用独立主格

at any other time；比较对象是车，不是时段；

(A) one quarter加后面的部分应该是一个可数项，而less修饰不可数名词，且用less的话，前面要用there is，故用less错误；that many的表达unidiomatic。
(B) Correcet；补全省略即there are fewer than one-quarter as many (as there were in the late 1950s)； fewer修饰可数名词正确；
(C) amount修饰不可数名词，不能用来修饰4,000（drive-ins）这个可数的量。
(D) the number指代不清；the amount指代不清，只能修饰不可数名词；the number is less没有问题，less和smaller都可以修饰数字。
(E) it没有指代对象，that amount指代4,000 drive-ins错。

prohibit不能加不定式

in the case of "prohibit", you can also just prohibit an activity (noun or gerund).
period.
i can prohibit smoking in my house. in this case, "smoking in my house" is the direct object of "prohibit", and there's no "from" anywhere because i don't mention who's smoking.
--> i can prohibit smoking
--> i can prohibit smokers from lighting up

d的with作状语修饰最近句子的动作，after falling需要修饰一个紧接着的动作，或者看成是伴随，逻辑主语应该是profits，都讲不通

"after" isn't a parallel signal. it can introduce another verb, but it doesn't have to; it can also be followed by -ING, or even by a noun, in these cases.
i came home after i finished printing the report
i came home after working out
i came home after midnight
... all correct

"after __ing" should describe something that happens pretty much right on the heels of "__ing" (i.e., there should not be a long interim between the action/event represented by "__ing" and that represented by the verb).