on condition that意思是“在...情况下”，通常表示一种虚拟的情况。有些时候on condition that身后是真实条件句，但这种情况并不多见。通常if可以连接真实条件句或非真实条件句，而on condition that则通常只连接非真实条件句。
条件（不论真实还是非真实）均应以从句来表达，ing短语通常是用来表达具有真实性的事件的。

举反例假设F是11

(2)分别假设n是odd和even时，m都是odd

(1) 651 532

M+W=1400
(1) 36%M+42W=1400*42%

问题问的是What percent of the employed people in Town X are females而不是employed females占population的percent

为什么既不能删除之前的讨论也不能自己回复自己。。。前面断章取义啦，文中所说的The plan is killing him是语意不正确，而非语法不正确。自我纠正一下。。。

这题是比喻，不是比较了。

当时做题紧张，死活找不到关于热度的相关文字，但是仔细品一品，只要找到盐度的上下层变化，也能做对题目。五个选项只有A是说底层盐度比上层浓。

类比推理，答案为讲出城市环境和乡村环境的区别

other mandates that can be applied to reduce or eliminate unjustified pay gaps between male and female workers have not remedied perceived pay inequities satisfactorily for the litigants in cases （in which men and women hold different jobs.）括号内的这部分解释了 manfates不能解决的情况

Although the proposed improvements are indeed needed, the authority's plan for securing the necessary funds should be rejected because it would unfairly force drivers to absorb the entire cost of something from which they receive no benefit.这句话是不是引导D选项？说driver receive no benefit，所以他们换了线路？

这道题完全不懂啊，前提和结论是什么？分为那个类型？我本来是分到因果类，前提：productive members得病会loss，结论：medical care可以增加gains。但是我做不出来选D啊 求解！

D having been 在说P一只在被消灭，直到现在还是在被消灭着，不对。

4呢？4的因数只有1和2，条件2说的是任何两个不同的因素的差都是奇数，4也满足这个条件。

the non-underlined portion of the sentence doesn’t tell us about the reason of the littering. It is telling the ways (or the sources) of littering.

不能说，我导致我，垃圾导致垃圾。 Using "because" means "the intentional discarding of lens caps..." led to littering. In fact, "the intentional discarding of lens caps.." is littering itself

choice d:
drastic change in meaning
this sentence has completely gotten rid of any reference to the concept of 'no longer'. while all the other sentences say that things have changed, this sentence presents the situation as if it's always been that way.

We're looking IN RETROSPECT at a statistic from the full year 1997, summarizing what happened in that whole year. (We can rest assured that we're not sitting in December 1997, looking back at the year that's just passed us by, because of the talk about 'the sixth full year of uninterrupted expansion.) This means that we have to use the simple past tense ('has jumped' is inappropriate).

Option C is wrongly comparing young people with commitment, which is wrong.