单词：oral health survey
单词：oral health survey 相关文章
SCIENCE REPORT – February 13, 2002: Oral Health Study By George Grow This is the VOA Special English SCIENCE REPORT. A new report examines the problem of tooth and gum disease in the United States.
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SCIENCE IN THE NEWS - Fight to End Polio a Story of Unexpected Problems, but Also Progress Over the years, polio experts have had to learn to deal with surprises. Transcript of radio broadcast: 03 March 2008 VOICE ONE: This is SCIENCE IN THE NEWS in
VOA慢速英语2008年（三）月
Lesson 24 Want to Kill Yourself ? Text A I wonder whether smoking is as harmful as doctors make us believe it to be? Some of the things they say are really hair-raising, and even if only half of what they say is true , then it is , if not suicidal, a
英语口语教程（Oral Workshop）--中级
From VOA Learning English, this is SCIENCE IN THE NEWS in Special English. Im Avi Arditti. And Im Faith Lapidus. Today, we report on caffeine and two popular drinks: tea and coffee. We tell about a study that found black tea is better for your health
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President Barack Obamas signature health care law appeared to be in legal jeopardy Tuesday, following oral arguments before the Supreme Court of the United States over whether the law is constitutional. The case now before the high court represents a
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BEIJING, April 19 (Xinhuanet) -- Almost one year after the disastrous（灾难性的 ） oil spill, scientists believe that the overall health of the Gulf of Mexico as nearly back to normal. However, the scientists restrain their optimism about natur
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