单词：zero speed switch
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CHAPTER ONE [00:44.25]READING [00:45.74]Page 2 and 3 [00:48.43]THE YOUNG GREEN CONSUMER GUIDE [00:51.51]Review by Tony Ma [00:54.62]This book says that our world is in danger [00:59.32]It is vital that we do something to save the earth [01:04.21]Firs
上海牛津初中英语九年级
联合国环境规划署将每年的6月5日确定为世界环境日，希望通过世界环境日主题让人类认识到可持续发展和公平发展的重要性，最终使全人类拥有一个安全而繁荣的未来。 2006年世界环境日庆典
英文语法词汇
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Take a fire antdon't forget your gloves. Toss it in water, and it'll eventually drown. But throw a group of fire ants into the water, come back the nex
Scientific American(四)月
Water Blankets Forming Planets A study in the journal Science finds much more molecular water in regions where planets are forming around young stars. The mechanism to keep the water from being destroyed by UV radiation appears to involve some of the
60秒科学
1.Another round of snow in the winter that just won't quit. A storm bearing down on areas from Oklahoma to New York, expected to dump ice and up to a foot of snow in some places. 2.Ukrainian troops trapped in their own country. On Sunday, forces were
美联社新闻一分钟2014(三)月
GIRL:Wow.You seriously spend a lot of time alone. BOY:What?So heres how it works.Water goes in the top,and food comes out the bottom. GIRL:When you shot it into the stratosphere（ ['strtə,sfɪə]同温层） you figure it would induce（ [ɪn'djuː
跟着美剧练发音