[ti:UNIT 2 Plant a Plant! Lesson 10: Plant Parts] [0:00.363]UNIT 2 第二单元 [0:02.105]Plant a Plant! 培育植物 [0:03.775]Lesson 10: 第10课: [0:05.444]Plant Parts 植物的组成部分 [0:07.100]THINK ABOUT IT! 想一想 [0:08.539]How many

发表于:2018-12-13 / 阅读(117) / 评论(0) 分类 河北教育初中英语(初中起点)八年级下册

[ti:UNIT 2 Plant a Plant! Lesson 9: How Does a Plant Grow?] [0:00.532]UNIT 2 第二单元 [0:01.935]Lessons 9~16 第9~16课 [0:04.780]Plant a Plant! 培育植物! [0:06.829]You Will Learn 你将学到 [0:09.105]Functions 实际应用 [0:10.888]Ta

发表于:2018-12-13 / 阅读(152) / 评论(0) 分类 河北教育初中英语(初中起点)八年级下册

When humans have a heart attack, heart muscles die after being cut off from their blood supply. But what if the heart could grow new muscle to replace the dead tissue? Some amphibians can regrow body parts, even entire limbs. But humans and other hig

发表于:2018-12-16 / 阅读(218) / 评论(0) 分类 VOA标准英语2011年(三月)

Because many of you have responded positively to my new series 'Analysis time', we will continue with a particularly interesting one today taken from an article about 'break-through' scientific technology. If you haven't come across the phrase 'break

发表于:2019-01-01 / 阅读(37) / 评论(0) 分类 英语博客 A cup of English

Researchers have identified a link between dementia and the brain damage that can occur in older people with high blood pressure and other forms of cardiovascular disease. High blood pressure, high cholesterol, and other conditions that affect blood

发表于:2019-01-14 / 阅读(69) / 评论(0) 分类 VOA标准英语2010年(十一)月

Beating Heart Tissue from Stem Cells In a study in the journal Science, researchers explain how they used mouse embryonic stem cells and microchip technology to create heart muscle tissue that actually beats. Cynthia Graber reports One of the goals o

发表于:2019-01-30 / 阅读(83) / 评论(0) 分类 60秒科学