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词汇是英语学习的基础，也是的重中之重，距离十二月份的英语越来越近了，各位考生更加不能放松对词汇的巩固和掌握，尤其是对一些重点的词汇的把握。 1. dump倾倒 倾销 This chemical pollution has two sources: the factories, which dump polluted water directly into the river, and the local community, which dumps untreated human wastes into the river. 2. earn赚得 挣得 获得 Yuppies are young people who earn a lot of money and live in a style that is too expensive for most of people. 3. ease不费力 安适 自在 Have you heard about the plane crash yesterday? It caused 120 deaths. I m never at ease when taking a flight. Though we often hear about the air crashes and serious casualties, flying is still one of the safest ways to travel. 4. economic经济的 经济学的 经济学 For them, the economic benefit they reap surpasses the risk of dying or losing property in one of the volcano s frequent eruptions. 5.edition版 版本 Hi, Louise, I ve got a used copy of our chemistry textbook for half price. I m afraid you wasted your money, yours is the first edition, but we re supposed to be using is the third edition. | 
