簡(jiǎn)介:An Arab boy, Abdullah, loves his donkey, Bim, but another boy, Massoud, who also happens to be a prince, is jealous of Abdullah and his relationship w
簡(jiǎn)介:Hormones shape each and every one of us, affecting almost every aspect of our lives - our height, our weight, our appetites, how we grow and reproduce
簡(jiǎn)介:Gutenberg invented printing, the most consequential invention of the Middle Ages. The technical adventure of Gutenberg is very impressive. The printin