单词：us policy
单词：us policy 相关文章
AS IT IS 2016-10-01 Report: Smoking May Permanently Damage Genetic Material 报告称吸烟或永久性损伤你的遗传物质 Here is another reason to not light up a cigarette. Smoking can permanently damage your genetic material, according to a n
2016年VOA慢速英语(十)月
This is Scientific Americans 60-Second Science. Im Cynthia Graber. This will just take a minute. Saliva contains many useful components: lubricants, enzymes for breaking down food and now compounds that can reveal a persons age. Thats according to a
Scientific American(六)月
You may have heard that humans and chimpanzees have something like 96 percent of our DNA in common. So why, then, are diseases like cancer so common in humans but so rare in chimps? If our DNA is nearly identical, shouldnt we be at risk for many of t
初学者听力文摘精选
Science and Technology Epigenetics and stress Baby blues 科技 外因遗传与压力 新生儿蓝调曲 A mother's stress while she is pregnant can have a long-lasting effect on her children's genes 母亲孕期压力过大会对孩子的基因造成长
经济学人科技系列
By Ron Corben Bangkok 13 July 2006 Five Southeast Asia nations are stepping up cooperation to fight bird flu. Under their agreement, Thailand and Vietnam will share their expertise in containing flu outbreaks through training programs and mobile lab
2006年VOA标准英语（七月）
By Steve Herman Tokyo 07 December 2006 Top-level international health officials say recent outbreaks of bird flu in South Korea emphasize the need for greater preparedness to deal with a potential human influenza pandemic. As Steve Herman reports fr
2006年VOA标准英语（十二月）