were not eager应该改成现在完成时have not been，这是因为这件划线部分的事情应该是到现在为止发生的事情，而不是在过去发生的事情

连词since使得It seems that elk would be mountain dwellers和they once ranged over virtually all of the continental United States变成了“因果关系”，但逻辑上“现在Elk像是高山居住者”和“他们曾经在各个地方生存过”是转折关系，应将since改为but。

In English, collective nouns for ethnic groups / families/dynasties / proper names for sports teams, etc, will be plural (unlike other collective nouns):
The Welsh have delightful accents.
The Medici were avid art collectors.
The Heat (basketball team) play in Miami.

So in this sentence, "the Shang" must be plural. Eliminate C.
In E, "and" should connect two verbs. However, "and well known" is a participial modifier. This isn't parallel.
The correct answer is D.

第一，在习语上，“遭受”应该用be not subject to而不是be not subject of；第二，as身后的those that damage collections in the United States是名词短语，这表示as在本选项中是介词。作介词时，as意为：“作为”。在逻辑上，“极端的气温和湿度”本身就是毁坏美国展品的东西，而不必要说“极端的气温和湿度”是“作为”毁坏美国展品的。

it要做形式主语也只能说it took sb some time／money to do sth，也不知道是必须有sb还是必须有to do sth还是都要有

The actual mistake in choice D is the word "arrangement". "Arrangement" doesn't refer to the process of arranging something; it refers to the arrangement that results from that process.
(Similarly, "as I was judging xxxx" makes sense. "During my judgment of xxxxx" doesn't, because a judgment is a conclusion, not the process of arriving at that conclusion.)

看准平行对象，决定有没有to

本题比较重要的一点是能看出选项(A)的这个倒装句来，正常语序为：
a cycle in which personal computer users, especially corporate consumers, are replacing their PC's with more powerful models has begun.
这里的倒装是因为cycle的定语从句实在是太长了，放在句中会使得主干部分被相隔太远，不容易让读者看明白。

as opposed to是“相反”的意思，instead of是“而不是”的意思。在逻辑上，现在330美金的学费和之前的7美金学费应该是“而不是”关系，而没有“相反”的关系。

C.by including伴随状语，在主句中没有合适的逻辑主语，错误。
单独Including（特例，不表示伴随），介词，做定语修饰前面的名词instructions。

A、B，known as/to be在Europe后面是会有歧义的，一种是作伴随省略being，主语是bones；一种是过去分词作定语，修饰Europe
D、E，those重复指代了
C，强调了bones known就很好

recognition

-public respect and thanks for someone’s work or achievements

*in recognition of something
eg：He was presented with a gold watch in recognition of his service to the company.

when placing them with others of their species, then，主语是locust，locust不能主动placing locust

平行

选项A：by far surpass those of pieces中的代词those应该改为that。这是因为，比较对象应该是两种玻璃的一些碎片的质量，而quality是单数名词，应该用that of。
选项E：Correct.本选项在语法和逻辑上均是正确的。not only身后的with regard to和but also后面的in terms of是两个平行的介词短语。请注意，平行要求的并不是介词相同，而是同样都是一个成分。比如，本选项中，not only和but also之间都是介词短语，这就是平行的，而不要求介词严格一样。

需要考虑to do的逻辑主语

C选项whereas后面没有spend的主语，不构成和前句的逻辑关系。

E选项，划线部分的意思应该是他用voice就像是其他人用乐器一样，如果是like的话，意思就变成他用voice就像是用乐器一样，意思变了。

during身后需要连接一个独立而确定的时间段（例如five years），而不能连接类似于recent times这样的模糊时间
"Up" is redundant, since "until" already carries this meaning.

• The sentence implies that the Inuit are no longer nomads.
If they were still nomads, the sentence wouldn't say "until recently"; it would say "until now" (or some equivalent). Remember that "recently", albeit not too long ago, is still a time in the past.
So, you need the past tense.

more than three times as many 【independent institutions of higher education charge tuition and fees of under $8,000 a year 】as 【 ( independent institutions of higher education) charge over $16,000】.