booksandknowledge（書與知識）_300字

Different books give different kinds of knowledge.Some are good and others bad.Of course.it is impossible for any one to read all the books in the world,even if he spends his whole life in reading.So it is a great waste of time to read any bad book.That’s why we should find out whether it is good or bad before we read it. 　

　　Bad books contain evil thoughts.They can corrupt our soul.Should one read them,the evil thoughts would poison his mind at once.But nowadays,bad books are round in the hands of many young people.Accordingly,their way of living is changed,and they are ready to do all sorts of bad things.　

　　Good books,on the other hand,teach and help us to do good.They are our ture friends.They are both instructive and inspiring.　

　　As a result,those who read goods get knowledge which is the great　 advantage in his work and achievements,while those who read bad ones will be influenced by the evil thoughts and contemptible ways of life,only to meet failure in his future.