单词：viridans endocarditis
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This is Whats Trending today Americas top dog is a bichon frise. Flynn the bichon frise was named Best in Show at the Westminster Kennel Club Dog Show Tuesday night. The choice surprised just about everyone watching. The Associated Press reported tha
2018年VOA慢速英语(二)月
As you've probably experienced firsthand, some mosquito species have a real taste for warm, human blood. So much so that if you raise them on it the lab, they'll accept no substitute. Fortunately, I don't get major reactions at all. Brad Main is a mo
2016年Scientific American(九)月
STEVE EMBER: Welcome to THIS IS AMERICA. I'm Steve Ember. FAITH LAPIDUS: And Im Faith Lapidus. This week on our program, we tell you about the past and present of the city of Baltimore, Maryland. (MUSIC) STEVE EMBER: We start with the name. Many Balt
2011年VOA慢速英语(三)月
ROME, Dec. 3 (Xinhua) -- Italy lacks the necessary energy(能量,活力) and strength for an economic revival while unemployment and poverty are on the rise, warned a report issued Friday. The 44th edition of the Censis think tank social survey, the
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In Africa's battle against malaria, two low-tech tacticsinsecticides and bed netshave done a decent job killing off mosquitoes. But it's mainly one species that's been affected. That's a species called Anopheles gambiae, sometimes called the African
2016年Scientific American(八)月
You might not think there would be that many people in the world prepared to devote lifetimes to the study of something so inescapably low key, 你或许会认为，世界上不会有多少人愿意花毕生的心血来研究那个不起眼儿的东西
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