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在对近年托福题目进行统计分析后，我们发现了一些神奇的单词。
在《松鼠储藏行为的影响》《体温管理》《人类历史上的营养改变》这三篇文章中，都考了optimal一词。
同样，在《价格革命》《磨碎粮食》《欧洲连续的手稿和口述文化》这三篇文章中，都考了incentive一词。
那么，这些被托福反复命题考查的单词，理所应当就是托福考生最应该重视、最应该优先背记的单词。
因此我在课堂上讲：“进入真经派学托福，你背的第一个单词应该是optimal。”
The Effects of Squirrels’ Storing Behavior 《松鼠储藏行为的影响》
We currently know that the sites frequently selected by eastern gray squirrels for scatter-hoarding are often coincidentally optimal for germination.
The word “ optimal ” in the passage is closest in meaning to
A. available
B. ideal
C. suitable
D. frequently used
Regulation of Body Temperature 《体温管理》
This provides the advantage that the body chemical reactions are at optimal levels even when the environment imposes extreme challenges.
The word “ optimal ” in the passage is closest in meaning to
A. ideal
B. average
C. significant
D. varying
Nutritional Changes in Human History 《人类历史上的营养改变》
Although we now think of an optimal diet as one that promotes longevity（long life）,historically our optimal diet was whatever made us strong enough to have healthy children and then live long enough to help those children survive to do the same.
The word “ optimal ” in the passage is closest in meaning to
A. health
B. ideal
C. natural
D. adequate
The price revolution 《价格革命》
This whole pattern of peasant tillage and rights in the commons was known as the open-field system. After changing little for centuries, it was met head-on by the incentives generated by the price revolution.
The word “ incentives ” in the passage is closest in meaning to
A. encouragements
B. developments
C. price increases
D. new techniques
Grinding Grain 《磨碎粮食》
People with worn or absent teeth faced starvation unless they could find alternative types of food that did not require chewing. Alternatively, they could try to find another way of grinding the fibrous plant material before eating it. Perhaps it was one of these incentives that led to the use of stone grinding tools for seed processing.
The word “ incentives ” in the passage is closest in meaning to
A. ideas
B. efforts
C. motivations
D. problems
Continuous Script and Oral Culture in Europe 《欧洲连续的手稿和口述文化》
It also facilitated a culture of shared inquiry, in which challenging texts were read aloud in groups as an incentive for debate.
The word “ incentive ” in the passage is closest in meaning to
A. preparation
B. motivation
C. topic
D. opportunity
------------- 前方高能预警！！！-------------
迎面走来的是托福最常考的30个单词！
你现在认识多少？能否立即说出它们的同义词？
如果不熟悉也不用担心，它们即将在本书中反复出现。看完本书，你想忘都忘不了。
它们是托福考试里最耀眼的明星。
