没食子酸,[化学] 五倍子酸

法国24电视台的一篇报道题为:法国请求当地人对游客友好一些. 法国旅游 A report by France24.com says that Francebegs its citizens to lighten up with tourists. The world's most popular city,Paris, is wrestling with its reputat

发表于:2018-12-06 / 阅读(59) / 评论(0) 分类 弗兰肯斯坦.Frankenstein

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January

发表于:2018-12-24 / 阅读(59) / 评论(0) 分类 Scientific American(一)月

AGRICULTURE REPORT - Scientists Clone Pigs to Make Omega-3 Fatty AcidsBy Mario Ritter Broadcast: Tuesday, April 04, 2006 I'm Faith Lapidus with the VOA Special English Agriculture Report. Scientists s

发表于:2019-01-30 / 阅读(44) / 评论(0) 分类 2006年慢速英语(四)月

By Steve Herman Pondicherry, India 03 September 2007 India has been celebrating the 60th anniversary of its independence from the British Raj. But the British were not the only colonizers on the subcontinent in the mid-20th century. While the Union J

发表于:2019-02-05 / 阅读(95) / 评论(0) 分类 2007年VOA标准英语(九月)

You need to take proper care of your eyes to maintain good eyesight. There are few fundamental rules that have to be done for good eye care. As you know very well that exposure to sun is very bad for the eyes. Similarly, if you use computer for long

发表于:2019-02-09 / 阅读(104) / 评论(0) 分类 英语小短文

Eating a small steak every day could be as good for you as stopping smoking, scientists say. 科学家说,每天吃一小块牛排可以像戒烟一样对你有好处。 People who eat lots of protein-rich food were found to have lower blood pressu

发表于:2019-02-18 / 阅读(286) / 评论(0) 分类 阅读空间