＝ basic number

SSS 2011-12-27

This is Scientific American's sixty seconds science, I'm Steve Mirsky. Got a minute? The eastern green tree frog looks exactly like the close related cops gree tree frog, the big difference between the two species is beneath the surface. The eastern

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Scientific American(十二)月

英语课程计划-World Down Syndrome Day

World Down Syndrome Day is on March the 21st every year. It is on this day because the number 21 is important in the identification of Down Syndrome. The condition is created by a 21st, extra chromosome being replicated three times, thus causing the

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英语课程学习计划和讲义

CNN 2010-12-03

Are you in the holiday spirit yet? Well, let's take you Cross Country, beginning in Pittsburgh, Pennsylvania. You might now. Its pretty. Bob Cox loves to make the holiday light display a pretty big spectacle with 150,000 computer-animated lights. Now

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CNN2010年(十二)月

Fewer US Students Are Ready for College

Fewer US Students Are Ready for College Fewer high school students in the United States were ready for college in 2015, say recent test results. Only 37 per cent of seniors scored at or above proficiency level in reading. The number of seniors scorin

发表于:2019-01-12 / 阅读(37) / 评论(0)

2016年VOA慢速英语(五)月

VOA标准英语2011--Scientists Study Genetic Basis of Autism

Scientists Study Genetic Basis of Autism Scientists have taken another big step toward identifying the genetic flaws which may cause autism, a type of neurological development disorder. In the latest development, laboratory mice have been genetically

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VOA标准英语2011年(十月)

金融英语口语商场过招对话(二)

Dan上回提议前半年给他们二成折扣，后半年再降为一成半，经Robert推翻后，Dan再三表示让步有限。您知道Robert在这折扣缝隙中游走，如何才能摸出双方都同意的数字呢？他从锦囊里又掏出什么

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aptenodytes forsteris

chain transfer reaction