在比较成分比较明显的情况下，不需要对than后面的比较部分作出是主语还是宾语的区分。

2. more of a kind of fat, 而不是 more fat of a kind

是不是这样理解：做完prep 9套和prep12真题，只要做GMAT La 9套就好了？

C中，if是条件状语，就近修饰了

c: it’s just not clear entirely clear how C either strengthens or weakens.

A：1) For somebody who doesn't know about Oneida would take it as a league/ some association/nation and hence singular. In that case, 'was' would be correct and 'who' would be incorrect.
2) If I know that "the Oneida" refers to an entire tribe / group / race and hence plural, then 'was' would be incorrect and 'who' would be correct.

A中more fuel-efficient作宾补，是说厂商把（现在的）小车变得更有效率。

B选项是个非限定性定从。C因果关系更清晰。

A中，直译，18岁以下的西班牙人占比43%；C中，43%的十八岁以下加州人是西班牙人；可以看出A没有说明43%到底是占了谁的比，C更清楚。

(D)an achievement attempted later in the century by other Scandinavian kings that was not successful

This choice incorrectly says that the achievement was unsuccessful; but, the logical and intended meaning is that the attempt was not successful.

1.may与possible重复，
2.核心词应该是融化和上升，melting和rise，而不是ice caps和sea level。
3.rise不需要用rising形式，melt名词要用melting
action noun和 complex gerund 并列

结构：It is unclear whether...or whether... 根据意思，不是whether or的结构

1.whether是否....if如果...
这里whether不能改成if，因为：引导主语从句，只能用whether，不能用if。
这里if条件状从，不能改成 when时间状从/that 定从，特别是when经常出迷惑选项

2,.固定搭配，in depth 彻底地 深入全面地

3.D：in other animals作状语，相同的pattern被展示在其他动物中，意思不对，且后面的that定从也不好
E：other animals做主语，主动发出展示相同pattern的动作，对

2) Jimmy was not the typical class president, loved by most of the students, but hated by a fair number as well. --> in which “the typical class president” is described as someone who is loved by most students; in this instance, jimmy is contrasted with the typical class president because some people also hate him.

老师，D项把itself提前到having前面是否就正确了？

more【fuel-efficient small】cars：词组的核心意思是更多的车，而这些车是经济省油的【more fuel-efficient】small cars：更经济省油的小车

通读全文才能最好地看出来文章的主旨

问例子／句子在文章中的作用，文章开头第一句话，然后后面就but...，明显是反驳第一句嘛

Coal output per miner

典型的取非思路。。。在一定情况下，非A有好处——A在一定情况下丧失了非A的好处，所以这个情况就成了A的缺点

并不是有无关比较就一定要排除——去掉无关比较，说的就是贵。
yields of marketing value=数量*价格

问的是知名品牌能否重新赢得consumers who have switched to store brands，B 选项抹杀了知名品牌的优势