This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Mosquitoes carry nasty diseasesdengue fever, west nile, malaria. But the microbes that cause those diseases dont attach themselves to the mosquitoes an

发表于:2019-01-08 / 阅读(81) / 评论(0) 分类 Scientific American(一)月

By Melinda Smith Washington 04 September 2007 Microchip device showninserted in arm One of the greatest fears for families of Alzheimer's patients is that an older relative might wander off, and then forgets how to get home again. Could a microchip i

发表于:2019-01-10 / 阅读(101) / 评论(0) 分类 2007年VOA标准英语(九月)

By Cathy Majtenyi Bujumbura 24 April 2006 Every 30 seconds a child in Africa dies of malaria. Health care workers report a drop in malaria rates with bed net use, but in the tiny central African natio

发表于:2019-01-13 / 阅读(93) / 评论(0) 分类 2006年VOA标准英语(四月)

Trump's Frequent Visits Disrupt Palm Beach Life And Businesses KELLY MCEVERS, HOST: President Trump is scheduled to fly to Mar-a-Lago again tomorrow. It is the third weekend in a row. Trump has always been a frequent visitor to his club in Palm Beach

发表于:2019-01-16 / 阅读(126) / 评论(0) 分类 2017年NPR美国国家公共电台2月

Why are dogs'noses so wet? 狗狗的鼻子为什么总是湿的? Humans and dogs share a special relationship, moulded over millennia of reciprocal love and companionship. 数千年来,人类和狗狗都有十分特殊的关系,相互喜爱,相

发表于:2019-02-01 / 阅读(342) / 评论(0) 分类 阅读空间

BBC Learning English People and Places Hoglands Amber:Hello, Im Amber and youre listening to bbclearningenglish.com In People and Places today, we meet Mary Moore, daughter of the renowned British artist and sculptor, Henry Moore (who died in 1986).

发表于:2019-02-04 / 阅读(151) / 评论(0) 分类 人与地方