单词：recombination system(carson 1957)
单词：recombination system(carson 1957) 相关文章
PEOPLE IN AMERICA - Laura Ingalls Wilder, 1867-1957: She Wrote Nine Little House Books About Pioneer Life DOUG JOHNSON: Im Doug Johnson. SHIRLEY GRIFFITH: And Im Shirley Griffith with PEOPLE IN AMERICA in VOA Special English. Today, we tell about Lau
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PEOPLE IN AMERICA - Rachel Carson, 1907-1964: Environmentalist and Author FAITH LAPIDUS: People America, a program in Special English on the Voice of America. Today, Steve Ember and Rich Kleinfeldt tell about scientist Rachel Carson. Her work started
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By Lawan Davis Broadcast: September 7, 2003 (THEME) People in America, a program in Special English on the Voice of America. Today, Steve Ember and Rich Kleinfeldt tell about scientist Rachel Carson.
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Rachel Carson (19071964) was a pioneer of the global environmental movement through her writing about conservation. Her 1962 book Silent Spring made her famous. It describes the harmful effects on the environment of using toxic chemicals on farmland.
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Rachel Carson, 1907-1964: Her Books Helped Launch the Environmental Protection Movement in the U.S. Her book, Silent Spring, led the U.S. to ban DDT. ANNOUNCER: People America, a program in Special English on the Voice of America. Today, Steve Ember
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伟大的设计是条永无止境的探索之路 －－ 它能帮我们养成一种自然的幽默。David Carson，一个社会学家和一个从冲浪者转型来的设计师， 带我们浏览一组叹为观止（并且幽默）的幻灯片，包括
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