氢过氧化【草(之上)+孟】

Boadcast: Jan 21, 2003 By George Grow This is Sarah Long. VOICE TWO: And this is Bob Doughty with SCIENCE IN THE NEWS, a VOA Special English program about recent developments in science. Today, we tel

发表于:2018-12-07 / 阅读(43) / 评论(0) 分类 VOA2003(上)-健康资讯

It is estimated that over 400, 000 Americans every year die of smoking related diseases. But kicking the habit is not so easy. A new study finds that smokers who smoke menthol cigarettes could have mo

发表于:2018-12-11 / 阅读(49) / 评论(0) 分类 万花筒2006年

This is Scientific Americans 60 Second Science, I am Cynthia Graber, this will just take a minute. Compounds found in the herb thyme have antibiotic properties. Now scientists have demonstrated that thyme might have a future role in fighting acne. A

发表于:2018-12-24 / 阅读(91) / 评论(0) 分类 Scientific American(三)月

以下段落是摘自新闻里的一些重要信息,并不是一个段落的听写。空内信息可在本新闻中全部找到,大家可以根据这些信息复述新闻。 一、泛听建议: 1、完整听一遍,掌握大意。 2、继续听,特

发表于:2018-12-26 / 阅读(34) / 评论(0) 分类 NPR边听边练

67 维生素C能否破坏DNA? DATE=7-11-01 TITLE=SCIENCE REPORT - Vitamin C and DNA BYLINE=Nancy Steinbach (Start at 59

发表于:2019-01-30 / 阅读(66) / 评论(0) 分类 科技之光

From NPR News in Washington, I'm Lakshmi Singh. Boy meets world. Today, the world had its first glimpse of Britain's royal new born, the third in line to the throne. He was brought up by his parents William and Kate, Duke and Duchess of Cambridge. An

发表于:2019-03-15 / 阅读(227) / 评论(0) 分类 2013年NPR美国国家公共电台7月
学英语单词
a grain of truth
a poor circumstance
anadromous migration
anarchizing
assault tank carrier
automatic attribute
banjo hit
be composed of
Bras-Panon
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Mile's operation
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