it was not until the latter half, 不一定用they

想问下prep和gwd的题目是不是重合的挺多的

As you can see, the entities in the list are a bit longer than usual. Moreover, the first entity has another list embedded in it (mud or clay). So a comma is put before the “and” for a breathing pause.

So the comma before "and" is only to help us in identifying the main list.

Note that the presence of a “comma + and” in a sentence doesn’t necessarily indicate that two or more Independent Clauses are connected. (The above sentence, for instance)

A那个it应该是形式宾语吧？heavy commitment makes it likely to blabla. 应该是ok的。另外A有没有其他的排除方式？这个名词和doing的区别实在是太不好用了。。。

fellows和a close relative不一致可以理解成单复数搭配不一致

Krech also contradicts Martin's exclusion of climatic change as an explanation by asserting that widespread climatic change did indeed occur at the end of the Pleistocene.
仍然是exclusion没有看到，排除，错选两题

Krech also contradicts Martin's exclusion of climatic change as an explanation by asserting that widespread climatic change did indeed occur at the end of the Pleistocene.
关键词：exclusion排除，看的关键句不仔细

although his argument is impressive when he applies the Marxist concept of "de-skilling" 原文

surprisingly stable,

But equally important to Hopi cultural persistence may have been an inherent flexibility in their social system that may have allowed preservation of traditions even as the Hopis accommodated themselves to change.

没看全选项，错选c

Within the United States prior to 1920, for example, only less urbanized states had granted women suffrage.
只有不是城市化最高的地区才有了woman suffrage, less修饰urbanized

differ

The numerical effect is obvious: there are fewer salmon in degraded regions than in pristine ones;

的确后面那个they did 或者 they were完全起不到避免歧义的作用...反而省略之后提前让两个问句的主语更清晰了

since 1990是介宾短语，做状语，B的Since变成修饰more than， 错，应该修饰grow

语义为先啊...显然读懂之后才发现后面那一句应该修饰 sport utility vehicles， 做的时候一直想着要和law平行

完全没有被这个解析说服....RON的答案也有点偏native,感觉有点难理解

没看到关键词定位：located around some communal Great Kivas 和in such apparently communal spaces.

还有一点，those应该会指代mothers with young children working outside the home in 1975， 因为代词指代的时候会包括其修饰语，所以产生歧义（不过我不太确定...）