A中的were to be 是什么意思啊，begin to do 和begin doing有区别吗，谢谢

看到有个网友的tips挺有意思的：
应该找的选项是同时包含关键词，close/open ; profit/cost 的选项，
A a higher cost,moderately profitable,但没有close/open
B C 没涉及到关键词，无关选项
D closed 但是没有profit/cost
E Closure;at enormous cost 同时出现，符合

Farthest连锁店计划卖煎饼糖浆。但空间有限，只能存一种糖浆 。调查显示1/4顾客倾向低卡糖浆，3/4倾向普通糖浆。由于FastMart想使销售最大化，所以明显应该存普通糖浆。方案推理，问削弱
A. 便利店买家不像超市买家，一般只买几次；无关
B. 倾向低卡糖浆和普通糖浆的用户的做蛋糕糖浆用量相同；增强，方向反
C. 普通糖浆价格和低卡糖浆差不多； 增强，方向反
D. 一般，倾向普通糖浆的客户在普通糖浆没有的情况下会买低卡糖浆；而低卡用户不会买普通糖浆；即存低卡糖浆策略更好，削弱结论，正确
E. 糖浆销售预计占比不大；无关

都毁在一个单词上，糖浆。。。用煎饼选的，错选B

市长：迁徙水鸟在我们海滩吃蟹蛋，吸引了旅游者。为了带来更多旅游者，城市计划扩建倍增海滩面积，让蟹来筑巢。
鸟类学家：如果海滩蟹的密度不高，迁徙水鸟会挨饿，因为鸟只吃蟹挖巢偶尔露出的蛋; 要支持市长，削弱鸟类学家观点
A. 每年部分蟹被诱饵抓获；无关
B. 蟹的繁殖率高，给了好条件，数量增长很快；削弱条件，正确
C. 旅行者花钱的对比；无关
D. 开垦增加的土地为鸟提供更多空间；鸟越多，更容易挨饿，增强鸟类学家观点，方向反
E. 某些鸟迁徙中只一站停留；无关

错选了D

宾补本来就不能是从句吧

缺少什么链词呢。。？

The new school of political history that emerged in the 1960's and 1970's sought to go beyond the traditional focus of political historians on leaders and government institutions by examining directly the political practices of ordinary citizens.
所以pre1960's political historian会focus在leaders and government institutions，选项C的minister对应leaders & government institutions
看清楚问题呀～是pre 1960！

like 后不能跟句子 唉又忘记了

“all the other planets身前是否加of对于本题影响不大，加上或者不加均可”

“to have recorded中的have表示先时性，不表示完成时，即，record这一事件发生在said这一事件之前。这里改为to record也没有问题。添加have只是突出先发生，并非必须添加。”

按句意理解，应该是每一个都想比其他的公司更成功。所以是each...the others

集合名词用单数。

其实本文一直在说DB的position问题，选题选大意，C就如此。In fact, however, Du Bois often shifted positions along the continuum between Washington and confrontationists such as William Trotter.

用的排除法才可以做出来。看看大家有有什么好的解题步骤？

【求教】这里为什么不能用differences between呢？不是两个耳朵听到的差别么？似乎是两者之间的差别呀？烦请老师解答~谢谢！

passing 和 passage, 这里是说proliferation导致了一个法案的通过，更应该侧重结果，而非过程，所以passage更好。

根据平行来看，首先排除A,D
B,C,E,中，感觉这道题想要通过举例一些mice和canaries来说明问题，哪一些呢？要用定语从句来修饰，when并引导定语从句，只是伴随状语，并不能说明本质。

关于DB在1918社论urge AA adopt的策略哪个是对的？回原文看就找到The editorial surprised many African Americans。结合文章发现这是个倒述，先说1918如何，然后解释了DB的变化过程，有1895和1903.reflected not a change in his long-term goals but rather a pragmatic response in the face of social pressure。Furthermore, Du Bois believed that African Americans' contributions to past war efforts had brought them some legal and political advances.

。。。。。positive

B：actually, in choice b, 'when' doesn't refer to anything - there's no time period to which it could logically refer - and that's the main issue with choice b. (if you interpret it literally, as you must, then it implies that (1) sometimes the vantage point was combined with the writing and sometimes it wasn't, and (2) it only made her valuable when it was combined with the writing talent. that doesn't make sense.)