外交：澳大利亚准备迎接奥巴马访问

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

背诵美文——细菌

BacteriaBacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a tho...

CNN新闻100篇 News Item 27

CNNGoldman Sachs surprised investors on Monday with an early release of its quarterly profits, which were way better than analysts had expected, twice as good, in terms of earnings per share.

晨读美文024

晨读美文International media such as TV network and magazine always give people in an information age mixed feelings. Like many other things, media is double-edged. As primary channels of informat