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

发表于:2018-12-24 / 阅读(64) / 评论(0) 分类 2016年Scientific American(九)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

发表于:2019-01-19 / 阅读(87) / 评论(0) 分类 英语新闻

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

发表于:2019-01-20 / 阅读(70) / 评论(0) 分类 2016年Scientific American(八)月

Fred: Hi, Shibika, so this is almost the end of the year, 2007. Can you tell me a bit, how was your year this year? Shibika: Yeah, I had pretty nice year actually. I went through a lot of ups and downs, and yeah, at first I did really well in my clas

发表于:2019-01-20 / 阅读(125) / 评论(0) 分类 原版英语对话1000个

By Sonja Pace Damascus 04 February 2006 Angry Syrian protesters set fire to the Danish and Norwegian embassies in Damascus Saturday. It was the most violent demonstration of anger to date over cartoon

发表于:2019-02-05 / 阅读(117) / 评论(0) 分类 2006年VOA标准英语(二月)

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

发表于:2019-02-21 / 阅读(78) / 评论(0) 分类 万物简史