这道题要注意选项 C They joined political organizations to protest the segregation of African American troops and the indignities they suffered in the military.
有关African American troop的内容在第二段：Hoping to participate in the traditional American ethos of individual success, many African American people entered the armed forces with enthusiasm, only to find themselves segregated from white troops and subjected to numerous indignities. They returned to a United States that was as segregated as it had been before the war.
他们意识到理想与现实的差异。后面讲到的movement已经是与AA troop无关了。
首先要搞清楚Prior to B' study的research究竟是指什么？
B‘study在文章最后一段，而这之前有1）关于职位高低的讨论；2）RBV和UEP的讨论，其中RBV和UEP是有讨论到任职时间的。
可能通过RBV和UEP会觉得A是错误的，因为RBV和UEP正是讨论了任期长短。
但是这里的research指的是1）。
另外其他选项也可以通过排除法排除。
But because complex species interactions may be involved, identifying a keystone species by removing the species and observing changes in the ecosystem is problematic. 定位
B cite a specific case that has convinced Western business experts of the value of a certain business practice
E indicate the need for Western managers to change their relationships with their external business partners
从立场来看，文章指出当前的模式存在问题，
B是主要内容是a specific case that has convinced ... experts，这是一个客观的陈述，作者的动作是cite，后面都是客观内容
而E indicate the need的立场是有偏向的。文章最后提到relationship （见“but they also make extensive use of “market-exchange” relationships”）但是作者实际并没有提出要change their relationship
注意提出存在的差异问题，并不代表是solution，比如作者提出日本有market-exchange relationship，但是并不意外着要采取这样的措施。
B 后边部分 as compared with those of market exchange relationships 错误。文章第二段not only... but also时提到market exchange relationship，market exchange relationship作为其中一个因素，但B选项陈述为变成跟market exchange relationship是片面的。
However, TQM cannot simply be grafted onto THESE SYSTEMS or onto certain other non-TQM management systems.
THESE SYSTEMS = rationalist + human relations, which are mentioned in the first paragraph.
1、 E introduces the word "possibly" which has a different meaning than "it can serve."
The "it can" means it is, really, while "possibly" means it might. Not the same thing. And the original sentence uses "can" so I want to preserve the meaning.
！！！！【 "in fact" contradicts "possibly".】！！！！
2、 In choice B, "which" describes "temperature", so you end up with a sentence that says the temperature is "an approximate thermometer".
First, that's not the intended meaning in context -- the crickets' chirping is the "approximate thermometer". Second, it's nonsense (the temperature doesn't measure itself).
3、the number of 对应it
"enough for xxx to happen" is a threshold. this is going to be some EXACT boundary at which something starts to happen.
paired with "quite possibly", this creates a contradiction. Eliminate A and C.
未划线部分as an endangered species可排除B（them）
如此严重以至于……
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这道题要注意选项 C They joined political organizations to protest the segregation of African American troops and the indignities they suffered in the military.
有关African American troop的内容在第二段：Hoping to participate in the traditional American ethos of individual success, many African American people entered the armed forces with enthusiasm, only to find themselves segregated from white troops and subjected to numerous indignities. They returned to a United States that was as segregated as it had been before the war.
他们意识到理想与现实的差异。后面讲到的movement已经是与AA troop无关了。