D there was less than one percent of homes that had electricity，主谓不一致，there were less than one percent of homes
另外重心变成了there was homes

分词短语providing entertainment是represent的伴随状语，其需改为和represent的并列句。这是因为，“代表首长”和“提供娱乐”是两个方面的事情，之间没有因果关系。

"evidence to suggest" and "evidence that suggests" are both acceptable in this sort of context. neither is a basis for elimination. normally you would see "evidence that suggests..." however, they've used "evidence to suggest..." here, in order to avoid writing evidence THAT suggests THAT xxxxx. not because it's wrong -- just because it's ugly.

B：descend from意思是下降；be descended from才是“...是...的祖先”

not only is Jupiter three times as massive as Saturn, the next largest
选项还原成为正常语序：Jupiter is not only three times as massive as .. 和 but also 后面的 possesses four of the largest satellites, or moons, in our solar system.不平行
Singing a tuneless song, there comes Matt. 这样倒装不对

the raising of rates 很wordy

A makes it likely to miss... this doesn't work. technically, this would mean that "it" - an unspecified entity - is likely to miss the signs. if you use the "it is ADJ..." construction, and the verb has a specific subject, you MUST include that subject in the construction. it is likely that the executive will miss...
The following sentence is awkward, but grammatically defensible: Commitment makes it likely for an executive to miss signs of trouble.

if "being" expresses IDENTITY or CHARACTERISTICS, then kill it. otherwise, evaluate it on the same merits as you would any other verb., 2，in this case, "being" isn't a modifier; it's a gerund (= NOUN type -ing form). in fact, "being committed" is the subject of this sentence!

More/Less … than …
As … as …
Compared to/with的正确用法：
Now 40 percent of the college students live off campus, compared to 10 percent, the ratio in 1990.

不能混用，如
More … as ×
As … than ×
More/less compared to

E per capita和 per person重复了
a drop是个同谓语
SVO，noun 可能情况有两种：
1、Noun修饰 O
2、Noun修饰SVO

mark

methods reduced time [needed by workers] so that 连词因此 they could produce more. 过去分词作简化的限定性定语从句，与 time that workers needed 本身含义一致。 so that 作结果从句 前后因果成立，方法降低时间，因此提高了生产力。语法句意都没有问题。强调的是方法的价值。 workers needed to produce 是限定时间。表示方法降低了干什么的时间。强调的是降低了什么时间。原句强调减少时间的结果，正确选项强调减少的什么时间。

A is to B what C is to D.

the ultimate goal of doing sth

their likelihood of doing sth is great.

1、 by doing 对 by+n+doing 不对，只能with+n+doing 独立主格 排除AC
2、D 两个they 指代不一样
3、they 丢掉了一个arm 很奇怪， overcompensating和growing之间并列不应该用逗号

请问第9题d选项用过去完成时和c选项用过去时有什么区别吗？我因为感觉没有时间点对照所以排除了用过去完成时的d

状语从句the cost of running nuclear plants is about the same as for other types of power plants中的比较对象是没有任何问题的。这是一个省略现象，补全则有：
the cost of running nuclear plants is about the same as the cost for other types of power plants.
这里的for基本上代替了of running，不直接用of是因为running也省略了。如果直接是of的话，会被认为是其它核电站的成本，而非运营成本。

，with milky sap是插入语，that修饰plant（that前不加逗号，除非有插入语）

请问一下，第四套第十题，C选项，intend是limitation的动作，简化过的定语从句应该用intending吧？为什么用了intended呢？

想了好久终于明白了，这道题主旨是成功率高不好，成功率低才好。 A说的是和别的学校一样successful，说明（成功率高）不好。 ————一个奇葩老师就是觉得低分学生才好，学生A和其他同学一样高分优秀，所以老师认为学生A不好

We can say either the size of the wolf population or the number of wolves.
however不能像 but（但是）那样直接连接两个句子（注意正句中的标点符号）。如：
我们都已尽了最大的努力，不过我们还是输了。
误：We all tried our best, however we lost the game.
正：We all tried our best, but we lost the game.
正：We all tried our best; however, we lost the game.
正：We all tried our best. However, we lost the game.