科学60秒:大象搭配，干活不累
Elephants are smart, social animals.And now we know that they can organize themselves into teams to accomplish tasks. A research team that included renowned primatologist Franz de Waal taught 12
008 六级真题 10年 12月 A 18题
RTQuestion 18 What are you going to do with the old house you are in heritage from your grandfather? I once intended to sell it, but now, I'm thinking of turning it into a guest house, because ...
背诵美文——植物拟态
Mimicry in PlantsPlant adaptations can be remarkably complex. Certain species of orchids, for instance, imitate female bees, other plants look and smell like dead animals, and still others have t
行胜于言
短文Louder Than Anything You Can Say I teach economics at UNLV (University of Nevada, Las Vegas) three times per week. Last Monday, at the beginning of class, I cheerfully asked my students how ...
