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(63) / 评论(0) 分类 2016年Scientific American(九)月

056 Benu and Glenu There were two islands called Benu and Glenu around Holstein Castle located next to the Zeeland coast. On these two islands, there were forests, ranches, fields, churches and towns. These two islands were located close to each othe

发表于:2018-12-31 / 阅读(236) / 评论(0) 分类 100个儿童英语小故事

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(85) / 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(69) / 评论(0) 分类 2016年Scientific American(八)月

How to Find Time to Exercise We all know we should get more exercise but most of us dont manage to be nearly so active as we want to be. Its easy to blame busy lives. If your boss expects long hours or you run your own business, or youre a stay-at-ho

发表于:2019-02-11 / 阅读(64) / 评论(0) 分类 阅读空间

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(75) / 评论(0) 分类 万物简史