童话故事: 爱丽丝漫游奇境记11
AliceKing and QueenHeartsKnaveWhite RabbitIn the garden,Alice saw the King and Queen of Hearts. There were many little birds and animals,as well as a pack of cards. The Knave of Hearts was standi...
科学60秒: “身负重任”的中世纪盔甲
Medieval armor certainly looks heavy. And now researchers have demonstrated how the protection might have put its wearers at a heavy disadvantage on the battlefield. An armored combatant in the...
美文背诵——睡眠的进化
Evolution of SleepSleep is very ancient. In the electroencephalographic sense we share it with all the primates and almost all the other mammals and birds: it may extend back as far as the reptil...
灾难:印尼地震
灾难:印尼地震Indonesian officials say a powerful earthquake off the coast of the island of Sumatra has killed 13 people. The quake destroyed many buildings and cut communications in and around t...