小试身手

1．将木板在水平地面上绕其一端转动的角度为α，求所需要做的功．木板长度为L，质量为M，木板与地面之问的动摩擦因数为μ．     

Where Am I？

There are almost as many people in this city as there are on the whole continent of Australia.There are more people here than in any other city in the world.Is the city New York?Is is London?Is it Mexico City?No!No!No!     

体育人生

Now that summer is well and truly underway it’s time to put down the books for a fewweeks and take a step outside to enjoy life.In celebration of summer we’re going to havea look at a favourite place to go when it's hot-the beach。     

笑不笑由你

1.Behave yourself!.请白重!请注意你的行为! 例:Tom, don' ttalk and laugh loudly with your desk-mate when the teacher is speaking in class. It' s not polite. You are not a child any more.Please behave yourself.-I' m sorry, Miss Wang. I won' t do it again. 2.music to my ears爱听的话,好听的话,听起来就像音乐一样动听。     

The Disobedient Donkey

Therewasonceadonkeywhoneverdidwhathewastoldto.Ifhismasterwantedhimtogotolefthepulledtoright.Infacthealwayswantedtodoexactlytheoppositetowhathismastersaid.Ithappenedthatonedaythedonkeywasbeingdrivenalongatwistyrackupahighmountainside.Allofasuddenhedecidedthathedidnotwanttostayonthepathandhemadeoffasfastashecouldtowardstheedge,wherethemountainfellsteeplyaway.Thedonkeywasjustabouttofallhead-firstovertheedgeofthecliffwhenhismastercaughthimbythetail.“Comeback,youstupidani-mal,”saidhismaster,pull…     

脱口秀

甲:我真羡慕那些大科学家,他们举世闻名。乙:如果你想在这个世界功成名就,就得学着趁年少多努力。甲:但是我没有他们聪明。乙:你该明白勤奋是最重要的事。请记住这句俗语吧:“我不知道有天才这种东西;它只是劳动加勤奋的结果。”