标签：plaque 相关文章
7. Natural Yoghurt beats bad breath Sugarless yoghurt could help beat bad breath, tooth decay and gum disease, say scientists. Japanese researchers found eating the yoghurt reduced levels of hydrogen sulphide - a major cause of bad breath - in 80% of
听美文故事记6级单词
As they stepped outside, Henry was about to say something when Benny grabbed his arm. Whats that? Everyone turned to see where Benny was pointing. At the top of the bridge, a light flickered and vanished. There wasnt time to decide what to do. On the
102 The Ghost of the Chatterin
The next morning, the four Alden children made their way to the Greenfield Public Library. After propping their bikes against a tree, they hurried up the steps. Jessie suddenly stopped with a hand on the doorknob. What is it, Jessie? Violet asked. Je
118 The Spy Game
This is Scientific American-Sixty Seconds Science. I'm Chris *. Got a minute? I'm guessing you brush twice a day, or aspire to. Our ancestors were a little less diligent. But that's a good thing for scientists, because ancient placode teeth are like
2014年Scientific American(二)月
US Street Named after Russian Opposition Leader Boris Nemtsov The local government in Washington, D.C. has approved plans to rename one of the citys streets after Russian opposition leader Boris Nemtsov. The street is in front of the Russian embassy
2018年VOA慢速英语(一)月
pH - a measure of how acid or alkali a solution is. As the pH gets lower, the solution is more acid. At a pH of 7 the solution is neither acid nor alkali. pH is the inverse of the logarithm of the con
医务英语
Planktonic - a form of life style in which an organisms floats freely in a fluid without significant attachment or association with other living forms. Plaque is a film of bacteria in a matrix of sali
医务英语
美联社,新闻一分钟,evacuate,erergency,hurricane,Katrina,1:Parts of Louisiana may evacuate while Mississippi declares a state of emergency, as Hurricane Katrina appears to take aim at the region. 2:Top Sunnis in Iraq's government speak out against the count
美联社新闻一分钟2005
1. Secretary of State John Kerry is remembering a young diplomat killed in Afghanistan Saturday. Twenty-five-year-old Anne Smedinghoff was killed in a bombing, the first diplomat killed since the Benghazi attacks. 2. Members of Rick Warren's Southern
美联社新闻一分钟2013(四月)
The U.N. secretary-general marked the fifth anniversary of the bombing of U.N. headquarters in Baghdad Tuesday. He was joined by survivors of the attack at a ceremony honoring those who died and were injured while working for peace. VOA's U.N. corre
VOA标准英语2008年（八月）
New Alzheimer's Research Raise Hope for Treatment, Cure Scientists working to unravel the mysteries of Alzheimer's disease are excited by two recent studies. Both provide important new insights on how the disease spreads through the brain. Guy Eakin
VOA标准英语2012年(二月)
以下段落是摘自新闻里的一些重要信息,并不是一个段落的听写。空内信息可在本新闻中全部找到,大家可以根据这些信息复述新闻。 一、泛听建议： 1、完整听一遍，掌握大意。 2、继续听，特
NPR边听边练
SCIENCE IN THE NEWS - November 26, 2002: Dental Health By Nancy Steinbach VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with Science in the News, a VOA Special English program abo
科技之光
Egypt, Nigeria and Peru are among a group of countries that have put together a wish list of disputed cultural artifacts they want brought back to their homelands. At a two-day conference in Cairo, participants argued museums are often the main obsta
VOA标准英语2010年(四)月
By Carol Pearson Washington, DC 10 February 2006 watch Dark Chocolate report Valentine's Day is the single biggest day for chocolate sales in the United States. More than 36 million boxes of chocolate
2006年VOA标准英语（二月）
A team of US researchers have found that those who have a high genetic risk of cardiovascular disease can cut the probability of a heart attack in half by following a healthy lifestyle. 美国的一组研究人员发现对于那些遗传性心脏病患
实用英语
An estimated eight million people in Britain enjoy rambling in the Peak District every year. But what many who enjoy outdoor pursuits don't know is that their right to roam was won by men who sacrificed their own freedom to gain access to the country
英语听力精选进阶版
Amid the desperate attempts by rescue teams to find anyone alive in the wreckage left by the Japan tsunami, survivors of the disaster are struggling to get by. Close to half a million people are estimated to be living in shelters, most sleeping on th
VOA双语新闻 2011年3月
Listen and Share 知行哈哈糖 A record stands forever 永远不能破的纪录 词汇扫描 reunion 重聚 coach 教练 modest 谦虚的 disclaimer弃权，否认 英文原文 Back at my high school for the tenth reunion, I met my old coach. Walki
英语笑话（MP3+文本）
Neil and Buzz could only spend two and a half hours on the moon because of the limited supply of oxygen in their tanks. Because Neil was commander of the mission, NASA awarded him the honor of stepping onto the moon first. Carefully Neil climbed down
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