科学60秒:地球的兄弟Kepler 22b
Hints:Kepler 22bNASA's orbiting Kepler telescope has discovered its first planet in the habitable zone of another star. By "habitable," astronomers mean that a planet could harbor temperatures c...
背诵美文——感冒与年龄
Colds and AgeA critical factor that plays a part in susceptibility to colds is age. A study done by the University of ichigan School of Public Health revealed particulars that seem ...
厨房飘着的云朵
短文Fill a kettle with water, then turn on the burner. In a while, your kettle will start belching white billowy stuff into the air. What is this stuff? Steam? Actually, no. Steam is water ...
只吃土豆的减肥法
bbcCan a diet of eating only potatoes for 60 days be good for you? This is precisely what one American man has done in order to "remind the public about the nutritional value of potatoes."Chr...