句子的逻辑意思是“young people现在比他们parents and grandparents过去对work and career有更少的commitment”，即前后比较的对象是young people和parents and grandparents，而grandparents有commitment是在过去，因此两者的谓语动词需明确写出来，不能省略。
从比较对象出发，排除C；从比较的时态出发，排除A/B；
英语中smaller用于修饰具体的事物，less用于修饰抽象的事物。由此排除A/C；E：a lessening of 表示减少的，用在此不合理，排除E；D：less of “较少的”，可用于表示比较。

1. E：句子开头是learning，由此可见主句的主语应该是人scientists，而E选项中主句的主语是it，因此排除E；
2. B：Before 从句的时态是过去完成时态，而句子中没有表示过去的过去的时态词。排除B；
3. A：A选项使得整个句子不是个independent 句子，排除A;
4. D：remove it中it指代的是a synthetic growth hormone，但根据句子意思可知应该是remove 人体中的growth hormone，而不是synthetic growth hormone。此外remove这个动作的发出者应该是doctor，而不是scientists。由此排除D。

做题时多注意句子的逻辑意思。

本题中出现了复数名词“experts”啊，我以为是they（experts） 被assigned to do something，所以选了A。同时想知道这个定语从句修饰谁？因为感觉语义上是experts 们去做这件事，反而觉得这个it 无指代

rate AT WHICH fatty foods are consumed.

A 没有prohibit that X do Y这种说法
BD them没有指代对象（employee也是单数）
E 没有prohibit 。。。to do这种说法

错选了C，这道题我有点overthink. D选项里的"alternative route has been improved"对我构成了干扰，认为说的是已经改进过的路会带来更大客流，那募资就是有必要的。。。于是果断排除了D...
C选项说这些人购买更多的交通卡券推迟这种过桥费增长产生的效应，只是说推迟，并没有质疑增长过桥费的有效性；
D选项里，上次涨价时，20%的车流宁可绕远路，来规避被收取更高费用，交通局收不到钱，自然也就质疑了这个方案的有效性。

DB之所以相信支持 Washington（也就是 accommodationism的代表）是因为他相信African Americans' contributions to past war efforts had brought them some legal and political advances. 但是紧接着就说DB的accommodationism没有继续，最后一句话就说原因：AA在军队里面仍然受到歧视，所以他呼吁这AA“return fighting”也就是继续开始反对accommodationism

Furthermore, Du Bois believed that African Americans' contributions to past war efforts had brought them some legal and political advances. Du Bois' accommodationism did not last, however. Upon learning of systematic discrimination experienced by African Americans in the military, he called on them to "return fighting" from the war. 要做这题要看懂这句话

Du Bois aligned himself with Trotter, Washington's militant opponent, less for ideological reasons than because Trotter had described to him Washington's efforts to silence those in the African American press who opposed Washington's positions.就说明了B：在1903年DB的观点改变不是意识形态上的改变（也就是说他们实际上没有从根本上反对Washington的观点），而是因为Washington的一个做法让他不爽了所以才支持Washington的反对者Trotter

in the correct answer, we have "have been killed by x" and "have been killed by y".
perfect.
you really aren't going to do any better than that!

in the choice with "those killed by bee stings" -- note that we don't have "people killed by the great white shark" in the other part.

A如果变成minority graduates are nearly four times more likely than (are) other graduates to plan on practicing....应该也是对的吧？

B.It develops a point about the biological species concept made in the previous sentence.对前面一个句子展开的一个点
C. It demonstrates why the biological species concept is invalid.说明理论不正确
这样看一目了然，Yet this idea can be too restrictive这句话才是结论，说明了理论不正确的典范，而后面开始First，Second， Third一个个展开，所以B更准确

= =。。。选了C的原因是他们关心价格是因为他们只想买贵的啊！价格低的统统不买

more than all the North American Great Lakes combined 对比的是lake的含水量

不选b的原因：很多人表示是因为猎人导致鹿的数量下降。这是一个观点。不是一个finding

At the conflict's center was the issue of whether tailors' female relatives should be identified as family members protected by the tailors' guild or as individuals under the jurisdiction of the seam-stresses' guild.
感觉应该是定位到这句，但是定位到了之后还是不知道如何阶解题，我是定位错地方了么，orz

rate of sth，这里的核心词sth要慎重考虑是否能有符合逻辑和语义的rate

project 做了一个投资，这个事件，initiated on Columbus Day.

B选项的expensive in manufacturing 是正确的吗？

B选项的expensive in manufacturing 是正确的吗？