单词：alternate study id
单词：alternate study id 相关文章
SCIENCE IN THE NEWS - September 17, 2002: Ginkgo as Memory Aid Disputed / New Findings About Deadly Skin Cancer / Hair and Sex Lives of Lions VOICE ONE: This is Sarah Long. VOICE TWO: And this is Stev
科技之光
This is the VOA Special English Agriculture Report. Alternate bearing is a widespread problem for growers of citrus and other fruit trees. It can affect a large area or just individual trees or even part of a tree. No, it is not a disease. Alternate
VOA慢速英语2009年（十一）月
Acupuncture by Untrained Providers Poses Risks for Kids In the hands of trained practitioners, acupuncture is a safe medical treatment, even for children. But a new study finds when acupuncture is performed by untrained providers, it can pose a serio
VOA标准英语2011年(十一月)
StudyFindsHighLevelsofBPAinCannedFoodforKids The industrial chemical BPA has been used to make hard plastic bottles and the lining of food cans for decades. After studies indicated that the chemical could play a role in cancers, heart disease and abn
VOA标准英语2011年(九月)
Drug Abuse is Major Threat to Street Kids There are millions of children around the world living or working on the streets. A new study says their struggle to survive is made even harder by high levels of drug use. The journal Addiction has published
VOA标准英语2013年(七月)
One of my fellow midshipmen at the U. S. Naval Academy was performing poorly in class and reported to his company officer for counseling., Your marks are deplorable! the officer scolded. Is there a problem-that has kept you from studies?No, sir, the
趣味英语