单词：diphenyl arsinic acid
单词：diphenyl arsinic acid 相关文章
How does acid deposition affect human health? We eat food, drink water, and breathe air that has come in contact with acid deposition. Canadian and U.S. studies indicate that there is a link between t
知性英语
By Lisa Schlein Geneva 21 September 2006 A U.N. development agency report says the current system of providing aid to Africa is not working, and calls for a Marshall Plan-style system to replace it. In its latest report, the U.N. Conference on Trade
2006年VOA标准英语（九月）
HEALTH REPORT - October 23, 2002: Folic Acid Reduces Fetal Deaths By Nancy Steinbach This is the VOA Special English Health Report. A new study in Sweden has confirmed another important health effect
健康与环境
Folic Acid Supplements Shown To Reduce Risk Of Autism Green, leafy vegetables, fruits and nuts naturally contain folate, a B vitamin that helps the body make healthy new cells. Most pre-natal vitamins include folic acid because it protects against de
VOA标准英语2013年(四月)
By Melinda Smith Washington, D.C. 07 June 2007 For years, doctors urged women to take folic acid if they planned to get pregnant. Then researchers discovered the nutrient helped reduce the risk of a heart attack. But now a new study shows folic acid
2007年VOA标准英语（六月）
Business: Apple From iPhones to iCars 商业：苹果，从iPhones到 iCars Apple is entering the auto business, but the road ahead could be rough. 苹果进军汽车业，但前路艰难。 Having redefined the personal-computer and mobile-phone ind
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