Task 1: 一个由4条curve 组成的graph，比较了1980～2000年期间，18～21 years old的青年人在娱乐项目上的花费/amount of money spending on leisure，这四个娱乐项目是sports, music(从100降至25），computer，photographs（从0增至100）。 ； Task 2: Someone say the age of book is past, the info will be presented by some multimedia tools such as video, computer, television and film； others think the book and the written words will be necessary for spread info &； complete education. Discuss both sides and give your opinion.