Group 2
favor [ˈfeɪvə] v．赞成；喜欢；支持；有利于；像；宁愿选择
例 That sex ratio will be favored which maximizes the number of descendants an individual will have and hence the number of gene copies transmitted.——GRE No. 4-1, Section A
生物体会选择的那种性别比例能使个体所拥有的后代数量最大化，并因此使传递给后代的基因复制品的数量最大化。
aid [eɪd] v．援助；帮助；有助于；促使
例 Aided by the recent ability to analyze samples of air trapped in glaciers, scientists now have a clearer idea of the relationship between atmospheric composition and global temperature change over the past 160,000 years.——GRE 1991年10月，Section A
最近，科学家已能够对封在冰川中的空气样品进行分析。在这一能力的帮助下，科学家现在对过去16万年中大气构成与全球气温变化之间的关系有了一个更为清晰的了解。
affect [əˈfekt] v．影响；感染；困扰；假装
例 While it is true that living organisms are profoundly affected by their environment, it is equally important to remember that many organisms are also capable of altering their habitat significantly, sometimes limiting their own growth.——GRE 1994年4月，Section A
尽管生物会深受其所处环境的影响是确凿无疑的，但同样重要的是，我们应记住，许多生物也能极大地改变它们的生长环境，从而在某些情况下限制它们自身的生长。
记 af-fect
af-=ad-=to，如“affinity”（亲密关系）（GRE No. 6-1, Section A）
fect=make, do，如“imperfection”（瑕疵）（GRE 1998年4月，Section A）
forsake [fəˈseɪk] v．放弃；离弃；断念
记 for-sake
for-=away from，如“forbid”（禁止）（GRE No. 3-1, Section B）
sake=strive
betray [bɪˈtreɪ] v．背叛；出卖；违背；辜负；泄露；流露
例 Yet for the first eight decades of the amendment's existence, the Supreme Court's interpretation of the amendment betrayed this ideal of equality.——GRE 1994年10月，Section A
然而对于此修正案存在的最初80年来说，最高法院对这一修正案的解释却背叛了这一平等的理想。
记 be-tray
be-=upon，如“become”（成为；变得）（GRE No. 3-1, Section B）
tray=hand over
differentiate [ˌdɪfəˈrenʃɪeɪt] v．区分，区别；使有差别
例 Darley observed that among acts involving unintentional harm, six-year-old children just entering kindergarten could not differentiate between foreseeable, and thus preventable, harm and unforeseeable harm for which the perpetrator cannot be blamed.——GRE 1996年10月，Section B
达利观察到在涉及无意伤害的行为中，刚进入幼儿园的六岁儿童并不能区分可预见、因此可预防的伤害和不可预见的伤害之间的差别，因此不能责备作恶者。
记 dif-fer-ent-iate
dif-=dis-=apart，如“disarm”（解除武装）（GRE No. 2-2, Section B）
fer=carry，如“reference”（参照）（GRE No. 3-1, Section B）
-ent：形容词后缀，如“evident”（明显的）（GRE No. 7-3, Section A）
-iate, ate：常用作动词后缀，其名词形式是-ation，如“validate”（使生效）（GRE 1994年4月，Section A）
相关题目：
Please select the two answer choices that, when used to complete the sentence, fit the meaning of the sentence as a whole and produce completed sentences that are alike in meaning.
As market forces penetrate firms and bid up the value of attributes of labor that are more measurable than is the knowledge born of experience, it can be expected that trends in wages will not ______those whose main value lies in such experiential knowledge. ——GRE OG, Practice Test 2, Section 4: Verbal Reasoning
A favor
B aid
C affect
D forsake
E betray
F differentiate