材料：恩格斯指出：“（18 世纪）在法国为行将到来的革命启发过人们头脑的那些伟大人物，本身都是非常革命的．他们不承认任何外界的权威，不管这种权威是什么样的…一切都必须在理性的法庭面前为自己的存在作辩护或者放弃存在的权利…从今以后，迷信、偏私、特权和压迫，必将为永恒的正义、为基于自然的平等和不可剥夺的人权所排挤。”

Teenagers growing pains

    Today, our students are facing many different problems and they want to ask some experts for help. Nancy says she feel stressed these days because of too much homework. She hasn't enough time to sleep for a long time and often falls asleep during the classes. John says he doesn't like to study because of the bad effect of computer games. Cindy says she gets fat because she likes to eat junk food and hardly ever takes exercise. Frank has the worst problem. He always fights with others as he doesn't know how to get on well with others and few of his classmates would like to talk with him.