Yael: I just read about an exciting technique. Researchers found a way to convert types A and B blood into type O blood--the type that can be transfused into any patient. This advance could help avoid blood shortages in the future. Don: Wow, that is

发表于:2018-12-03 / 阅读(52) / 评论(0) 分类 初学者听力文摘精选

Some people take the view that sometimes in life we have to take chances in order to make progress. I admire such people. It certainly takes courage to take risks. Maybe it's due to my upbringing, but

发表于:2018-12-08 / 阅读(128) / 评论(0) 分类 赖世雄中级美国英语

【背景】 血型分类: 一般常见A、B、AB和O四种,另外还有RH、MNS、P等极为稀少的10余种血型系统。其中,AB型可以接受任何血型的血液输入,因此被称作万能受血者,O型可以输出给任何血型的人

发表于:2018-12-27 / 阅读(35) / 评论(0) 分类 英语听力广播—Listening

III. Listening In Task 1: Stem Cell Research Script Gregory: The Republican party in America is opposing stem cell research. I find it hard to believe that in this day and age, someone would do that. Lillian: Stem cell research sounds pretty impressi

发表于:2018-12-29 / 阅读(33) / 评论(0) 分类 新视野大学英语:视听说教程 4

By Carol Pearson Washington 16 April 2007 Watch Diabetes report Type 1 diabetes can affect anyone but it usually starts in people younger than 30. It is a lifelong disease, and there is no cure. But doctors recently tested a stem cell therapy that a

发表于:2019-01-09 / 阅读(80) / 评论(0) 分类 2007年VOA标准英语(四月)

SCIENCE IN THE NEWS - December 3, 2002: Diabetes By Oliver Chanler VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with Science in the News, a VOA Special English program about rece

发表于:2019-01-11 / 阅读(59) / 评论(0) 分类 科技之光