单词：carbonitride segregation
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一个英语单词可分为三部分：前缀（prefix）词根（root）后缀（suffix）。位于词根前面的部分就是前缀。前缀，可以改变单词的意思。 carb-, carbo- 表示碳 carbon = carb + on n. 碳 carbohydrate = carbo + h
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Unit 80 Civil Rights Movement against Segregation in the US During and after World War II, challenges to segregation became more common and more successful. Three major factors accounted for this: -- The Great Migration The great migration was the mo
英语流行话题阅读：语境识词4500
Alumni work to save buildings designed to educate rural African Americans Susan Logue Koster | Dillwyn, VA 25 February 2010 Watch: Logue Koster Report MP4 Wilbert Dean was moved to save his school when he saw it was being used as a trash dump. Relate
VOA标准英语2010年(二月)
RACHEL MARTIN, HOST: As Americans, we are bound by a collective identity. We see ourselves as independent change makers. We invent things. And we can reinvent ourselves. But that innovation, that desire to keep changing has gone away. That's the cent
2017年NPR美国国家公共电台3月
模仿文本： 50 years ago on May 2nd, 1963, racial tensions in the US city of Birmingham, Alabama reached the peak when thousands of black schoolchildren took to the streets to protest against segregation. It became known as the Children's Crusade
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Science and Technology Materials science Cracking a problem 科技 材料科学 通过裂纹解决问题 Another use for a fashionable, new material 一种流行新材料的新用途 LIKE all other human activities, science is subject to fads. 像其它
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