这题理解题意是关键，每一天都按最低的方法走，画个二叉树就明白了

我觉得第五题取反应该是：这种做法不会给竞争者提供一个更好的减价机会
所以正确选项才是“可以重复降价 对手于是没有降价机会”

注意平方不会改变数字奇偶性==
不要被条件一带跑

[引用]
10的50次，即，1的后面有50个0,减去74，变成48个9和26。

48*9 + 2 + 6 = 440

所以和为440.

选C

changes that included dramatic growth in the corporate demand for travel services, as well as extensive restructuring and consolidation within the travel industry
1.需求增长
2.旅游行业内的重组和合并-->E

good fund-raisers constantly try less-likely prospects in an effort to expand the donor base，说明好的筹款者会尝试用最少的努力来扩大捐款者的基础
即，好的标准是新的人捐款成功率，而不是看旧的人捐款成功率
原文要求支持证明学校捐款工作不到位的句子
只有A直接指出新的人捐款成功率和其他学校一样

ridership 客流量

定位+inference：
题目问的是 security of land tenure ，定位：Researchers also measured land-tenure security: in Tawahka society, kinship ties are a more important indicator of this than are legal property rights, so researchers measured it by a household's duration of residence in its village. They found that longer residence correlated with more adoption of improved plant varieties but less adoption of chemical herbicides.
L-T-->kinship ties--> DURATION,

on condition that 身后应该接虚拟语气，其中要省略should加be动词

选了C，错因是没找到围绕全文展开论述的话：
1965年前科学家认为板块运动是摩擦生热，且假设材质不同，摩擦不同
1965年，but in 1965 Henyey found that temperatures in drill holes near the fault were not as elevated as had been expected，（注意这里的时间是1965年，）
1992年有一个test发现压力也会影响摩擦生热，但最终的关系科学家们还在wonder
因此总体来看，是H的发现引起了全文的论述，而不是1992的test

escarole n.莴苣菜
注意由于unlike带来的名词比较，弄清比较对象：winter greens VS escarole
因此E选项把cooking time 和escarole比较，因此错误

错选E：阅读细节被遗漏："argue that .... reduced the effort rquired.... but ownership of these appliances did not correlate with less time spent on housework", 说明科技进步还是能够减轻工作量的，但是对家务时间的减少并没有太大关联。

(1)中的只买P不买Q意味着不包含两个圆重叠的部分，（2)的买Q，是指的是整个Q的圆。因此1+2刚好是全部圆的部分，用整体的1减去它们就能求得都不买的人的比例。

再看一遍就对了... besides 可以做副词或介词，这里做副词比较合理，所以是一个伴随状语

A选项有点绕，首先cost per pack to consumers其实就是company's sales price，所以表示公司不会为了牺牲利润而不涨价（公司一定会涨价）
既然公司涨价了，那收到的香烟税就会变多

注意后面说"percentage" did not change，所以tax遍少了表示市值下降了

warranted原本意思是保证的，这里可能解释为正确的（因为后来被其他科学家证实）

这题实在不该错，前面主语是（environmentalists'） proposals，ABC应该要最快速排掉

immune to； immune from，前者是对···免疫；后者是免除于····+注意时态是过去完成时

注意平行关系和句意，且主语是style
first, examine the split between 'more ergonomic' and just 'ergonomic'. in this case, we must preserve the meaning of the original statement: the new design is more ergonomic than the old design. if we change this to just 'ergonomic', we're attaching an implication that the old design simply wasn't ergonomic (and that the new design, by contrast, is) - an unacceptable implication. that gets rid of answer choices c, d, and e right there.

another item to examine is parallelism. in this case, in the construction 'X rather than Y' (or its analogues, 'X and not Y' and 'more X than Y'), items X and Y must be parallel.