Evidence is seen for a possible cause of solid tumors, but many questions remain. Transcript of radio broadcast: 24 June 2008 This is the VOA Special English Health Report. Some experts predict that doctors will someday use stem cells to treat many

发表于:2018-12-15 / 阅读(39) / 评论(0) 分类 VOA慢速英语2008年(六)月

HEALTH REPORT - New Embryonic Stem Cell Lines Developed for Researchers By Paul Thompson Broadcast: Wednesday, August 11, 2004 This is Gwen Outen with the VOA Special English Health Report. Researcher

发表于:2019-01-08 / 阅读(54) / 评论(0) 分类 健康与经济

African sleeping sickness affects mostly rural people in 36 sub-Saharan countries. The World Health Organization says there are currently an estimated 30,000 cases. Left untreated, it is fatal. Sleeping sickness is caused by a parasite that is transm

发表于:2019-01-13 / 阅读(37) / 评论(0) 分类 VOA标准英语2010年(十二)月

Topics: Famous Americans - Jim Thorpe; United Code of Military Justice Common Crimes; pre-paid cell phones; abbreviation versus acronym; a matter of form Words: intramural team hurdle pentathlon decathlon amateur posthumously absent without leave des

发表于:2019-01-22 / 阅读(50) / 评论(0) 分类 美语听力 English Cafe

Compared with the new eukaryotes the old prokaryotes were little more than bags of chemicals, in the words of the geologist Stephen Drury. 地球已经朝着真正有意思的行星迈出了第一步。与新的真核细胞相比,旧的原核细胞借

发表于:2019-02-17 / 阅读(56) / 评论(0) 分类 万物简史

台湾籍旅美老师今天交给我们的句子是: I'm so tired of performing in a pageantry of vanity that conform into this accepted form of digital insanity. Call me crazy, but I imagine a world where we smile when we have low batteries, cuz t

发表于:2019-03-05 / 阅读(75) / 评论(0) 分类 留美老师带你每日说英文