Broadcast: Jan 10 2003 The Pentagon has issued a statement 2) asserting the military is prepared to protect its personnel from possible biological weapons attack. On the surface, the Pentagon's assert

发表于:2018-12-08 / 阅读(46) / 评论(0) 分类 VOA2003(上)-健康之旅

本讲为 2006 年下半年新的教学内容,请对照教材、练习册和语法书听录音! 1. Data from previous animal experiments is used to develop a computer model which will predict what

发表于:2018-12-15 / 阅读(32) / 评论(0) 分类 自考英语(二)60讲

By Lisa Schlein Geneva 20 November 2006 U.N. Secretary-General Kofi Annan is urging nations to do more to combat biological weapons, and to create global safeguards to keep them out of terrorist hands. Kofi Annan at a review conference on Biological

发表于:2019-01-12 / 阅读(104) / 评论(0) 分类 2006年VOA标准英语(十一月)

AGRICULTURE REPORT - Biological Controls, Part 1 By Mario Ritter Broadcast: Tuesday, April 13, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Biological controls are living

发表于:2019-01-30 / 阅读(52) / 评论(0) 分类 农业与发展

Israel Practices Biological Attack Response The Israeli government has carried out a two-day exercise it says is aimed at boosting preparedness for any terrorist attack aimed at sparking an outbreak of a highly contagious disease. Israeli officials e

发表于:2019-02-12 / 阅读(57) / 评论(0) 分类 VOA标准英语2011年(十二月)

Nicotine Enhances Effects of Cocaine A new study from Columbia University highlights the role of tobacco in cocaine addiction. The research indicates that nicotine may be a key gateway drug in a biological as well as a social context. Dr. Amir Levine

发表于:2019-02-12 / 阅读(51) / 评论(0) 分类 VOA标准英语2011年(十一月)