单词:enguarding
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AS IT IS 2014-05-02 Young People Crowd Science and Technology Fair 在科技展上聚满了年轻人 Hello to one and all, and welcome back to the program that will help you learn and improve your American English. Im Jim Tedder in Washington. If you
Margaret Mead Influenced How Social Scientists Understood Native Cultures ANNOUNCER: Margaret Mead Welcome to People in America from VOA Special English. Today, Sarah Long and Rich Kleinfeldt tell about one of the most influential social scientists o
Some things are hard to remember. Others are hard to forgetespecially things that are traumatic. But kids, it turns out, are better than adults at forgetting the bad stuff. Now scientists think they know why. According to an animal study in the Septe
Obama Hosts Top Teenage Scientists Fourteen-year-old business owner Joe Hudy and one of his inventions, a compressed air cannon that shoots marshmallows, attracted President Obamas attention at the White House Science Fair. The president invited Joe
Intel Awards Top Prizes to Young Scientists 英特尔奖最高奖项颁给青年科学家 The United States may not be at the top of the worlds rankings when it comes to test results for high school students, but that does not mean they are without t
Voice 1 Hello. Im Christy VanArragon. Voice 2 And Im Elizabeth Lickiss. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand no matter where in the world they live. Voice 1 Some sci