D选项：一些公益组织不太好，捐给他们的钱不太会使社区收益：只是指出一部分公益组织的问题，但只要有一个公益组织惠及了社区，就能提高Magu形象，从而促进销售。
带some的选项通常是错的，不具有代表性。

D明显无关选项，锻炼更难也不意味着锻炼的更少

注意A和B选项，省略了that的从句，不是出现了两个谓语

因果推理怎么可以攻击结论呢？

E. This information does not help explain the results of the accountants' calculations. Simply because the changes in profit and the introduction of FD service happened at roughly the same time, we cannot assume that one caused the other. That is, it is possible that these fluctuations in profit are due to normal, perhaps seasonal, fluctuations in profits. Therefore, these fluctuations would not necessarily negatively impact Clearbell's overall level of profitability.

n除以3余2-->n=3a+2, t除以5余3-->t=5b+3
(1)n-2被5整除-->n-2=5c，因为n-2=3a，所以 n-2既能被5整除也能被3整除，则n-2能被15整除，n-2=15e，n=15e+2,所以n/15的余数是2；
(2)t被3整除-->t=3d，t拆成2个因数E和F， t/15=EF/15=E/3*F/5,余数是3
所以n除15余2，t除以15余3.继续用余数公式设n,t，n*t=(15a+2)*(15b+3)，乘开来最后只有2*3是不能被15整除的，余数是6

standard deviation标准差=方差的算术平方根，而方差=【（x-平均数）²+（y-平均数）²+（z-平均数）²】/3，现在xyz同时增加5，所以平均数也增加5，所以方差没有变，所以标准差也没有变
如果xyz同时乘以5，则平均数放大5倍，每个数放大5倍，（x‘-平均数’）²=（5x-5平均数）²=25*(x-平均数)²，【（x‘-平均数’）²+（y‘-平均数’）²+（z‘-平均数’）²】/3=25*【（x-平均数）²+（y-平均数）²+（z-平均数）²】/3=25倍原来的方差，标准差则等于5倍原来的标准差。

请问C选项为什么是that falls而不是that fall呢？that 从句应该是修饰snow, sleet and hail吧？如果有个F选项是把C的falls 改成fall,会不会更好呢？

试数法，n是整数，试1，2，3，4，再加个-2，-1.

rc
错选c，在c上犹豫很久，；c是不对题意；
问题问的是The passage suggests which of the following about urbanization in Switzerland and the United States by 1920?
那么一切都要围绕urbanization，C讨论的是就业，涉及industrialization，超纲了，所以pass

设S的第一个数a，sum S=5a+10，T的第一个数是b，sum T=7b+21，S的中位数=a+2，T的中位数=b+3
(1)a+2=0,a=-2
(2)5a+10=7b+21
(1) (2)联立，得5a+10=0=7b+21,b=-3
T的中位数=b+3=0=S的中位数

看不懂解释
This does not provide additional support for the claim that monitoring region X will be useful as a warning of an impending error. After all, the statement that activity in region X began at least 5 seconds before the errors occurred rules out only that the increase in activity in region X occurred less than 5 seconds before the errors occurred. This statement does not rule out the possibility that the increase came, for example, many hours before the error occurred.

rc
语气语态，肯定的程度有区别导致选线错误
文中“Like brown bears and polar bears, sloth bears may have evolved in an environment with few trees. ”说的是may have
选项b“They live almost exclusively in treeless environments.” 说的是almost
明显肯定程度发生了变化，one word pass，必须严格和文中意思相同，must be true

rc
定位错误
Although cub carrying may also be adaptive for myrmecophagous foraging, the behavior of sloth bear cubs, which on their mother's back at the first sign of danger, suggests that predation was a key stimulus.（刺激）

rc
不要看到比较就选...感觉好像对就直接选了...有的时候它会故意把比较的方向搞反来误导你

D. The locomotion of black bears is significantly more efficient than the locomotion of sloth bears.（因为black bear行动比sloth bear更efficient，所以black 可以行动了不代表sloth就可以了，可以削弱作者idea）
E. The habitat of black bears consists of terrain that is significantly more varied than that of the habitat of sloth bears.（与题干逻辑方向不符：变成加强，black bear领域更复杂都会自己走了，那么sloth bear领域更简单的，应该也会走了）

B项反驳了argument的结论：The contingency-fee system ... does not increase the number of medical malpractice lawsuits brought against doctors.

韦恩图：
说G的都说E，所以G是E里面的一个小饼饼。S则可以和E交叉，但不能和G交叉，因为没有人能说3种语言。

翻译：最近关于20世纪20年代美国的女权主义学术挑战了用20世纪20年代妇女选举权运动未兑现的“承诺”来评估的早期解释。

语义：代词it的指代对象为an expanding cloud of energized particles，这是没有问题的。但是，此处的“点亮北极光”和“使卫星失效”应该用伴随状语的形式，不能用合句的形式。在本题中，“电子云引起了地球周围的磁场风暴”实际上是“点亮北极光”和“使卫星失效”的根本原因，即，“电子云引起了地球周围的磁场风暴”为主句，“点亮北极光”和“使卫星失效”为从句（伴随）。

对应原文第一段第一句：Recent feminist scholarship concerning the United States in the 1920s challenges earlier interpretations that assessed the 1920s in terms of the unkept “promises” of the women’s suffrage movement.