004 六級真題 10年 12月 A 14題

科學(xué)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

科學(xué)60秒:透鏡效應(yīng):揭開古老星系面紗

Five very old galaxies are now known to astrophysicists, thanks to Albert Einstein. A century ago, Einstein predicted an effect called cosmic gravitational lensing. Picture a massive galaxy out i...

晨讀美文025

晨讀美文My grandparents believed you were either honest or you weren’t. There was no in between. They had a simple motto hanging on heir living-room wall: ”Life is like a field of newly fallen ...

鯊魚入侵！

bbcWhat do you expect when you go on holiday? Probably to relax, have a good time andabove all, stay safe. Sometimes natural disasters, such as a hurricane or an erupting volcano, may puta st...