Is Cloning the Future? Saving lives has always been an important mission of science. Now science, and indeed all society, is facing a new dilemma:whether or not to try and save more lives through huma

发表于:2018-12-31 / 阅读(50) / 评论(0) 分类 有声英文阅读

ENVIRONMENT REPORT - October 25, 2002: Chinook Salmon Deaths By Cynthia Kirk This is the VOA Special English ENVIRONMENT REPORT. American officials say at least twenty-thousand chinook salmon and othe

发表于:2019-01-02 / 阅读(46) / 评论(0) 分类 健康与环境

不少准妈妈们都为宝宝做过三维或四维彩超,并给宝宝们拍下人生中的第一张照片。而试管宝宝们如今更可以拥有自己胚胎细胞时期的珍贵影像,这就是细胞拍。 It is the latest trend in baby pictu

发表于:2019-01-08 / 阅读(50) / 评论(0) 分类 英文语法词汇

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

A unique array of underwater listening devices stretches 3,000 kilometers along the west coast of North America to track marine life along the continental shelf. It's like giving fish a cell phone, says Pacific Ocean Shelf Tracking (POST) executive d

发表于:2019-01-11 / 阅读(45) / 评论(0) 分类 VOA标准英语2010年(九)月

By Deborah Tate Washington 17 July 2006 The U.S. Senate Tuesday is expected to approve federal funding for expanded embryonic stem cell research, despite a veto threat from President Bush who opposes the idea on moral grounds. -------- On the eve of

发表于:2019-01-31 / 阅读(95) / 评论(0) 分类 2006年VOA标准英语(七月)