直接细节
choice c,For the Jacksonians, nonpartisanship lost its relevance, and under the direction of Van Buren, party gained a new legitimacy.注意new legitimacy，新的合法性
choice e, Although Ketcham does not picture the struggle in quite this way, he does rightly see Jackson's tenure (the seventh presidency) as the culmination of the acceptance of party, commerce, and individualism. 他认为Jackson的任期是对party，commerce和individualism的接受达到顶峰
补充下关于each other还是another选择的思路。OG里面说 teams represent their own chief at the court of... 这里指的是舞蹈队代表自己的首领在（另一个首领跳舞）还是（在另一群舞蹈队跳舞），因为their own chief暗示了这句话应该是和chief之间做比较，而不是另一群舞蹈队。根据指代的单双可以选择another,望指正~
In a new book about the antiparty feeling of the early political leaders of the United States, Ralph Ketcham argues that the first six Presidents differed decisively from later Presidents because the first six held values inherited from the classical humanist tradition of eighteenth-century England
作者通篇都在评述 Ralph Ketcham的观点：最早的6位美国总统和之后的总统都不一样
直接细节题：Because the vertical pressure gradients within the blood vessels are counteracted by similar pressure gradients in the surrounding water, the distribution of blood throughout the body of sea snakes remains about the same regardless of their orientation in space, provided they remain in the ocean.
choice B直接概括了P2的中心思想：The problem confronting terrestrial snakes is best illustrated by what happens to sea snakes when removed from their supportive medium. 陆蛇所面对的问题可以通过当水蛇离开支持媒介面对的来解释
choice C:
生物体对于它所在环境某一个特征的适应性的有效性，只能通过检验其他物种对于一个不同环境的相似特征的适应性的有效性。1）only过于绝对 2）全文没有提到不同环境之间的相似特征（陆地、海洋是完全不同的环境，之间没有相似性）
1. 固定搭配：ability to do sth.有能力做某事；ability of sth./sb. 某某某的能力。
2. Be subject to sth：If someone or something is subject to something, especially something bad, it is possible or likely that they will be affected by it. 其中subject是形容词。
E. the range用了定冠词，可是前面并没有提到过该range，因此定冠词使用错误
1. capability to do；GMAT认为capability of X-ing/in X-ing是wordy/awkward的。
2. ability：sb's ability to do sth或ability of sb/sth to do sth
3. capability in doing错，此处in dealing有做状语修饰整个从句的歧义，变为Sulfur dioxide在dealing with的时候减少了respiratory system的能力，而不是原义想要表达的，减少了respiratory system的deal with…的能力；capability如果后面要加in doing,最好紧跟capability，避免歧义
But for N, S + should/would/cold/might + V / (have Vpp.) 若不是N, S应该….
= If it were not / (had not been) for N
= Were it not for N / (Had it not been for N)
= Without N（介词只有without可表虚拟语气）
At the time, minorities constituted seventeen percent of the nation's population, but only four percent of the nation's self-employed.
gap在于少数民族占全国的17%，但是只有全国的创业者的4%
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直接细节choice c,For the Jacksonians, nonpartisanship lost its relevance, and under the direction of Van Buren, party gained a new legitimacy.注意new legitimacy，新的合法性
choice e, Although Ketcham does not picture the struggle in quite this way, he does rightly see Jackson's tenure (the seventh presidency) as the culmination of the acceptance of party, commerce, and individualism. 他认为Jackson的任期是对party，commerce和individualism的接受达到顶峰