根据下列文章,请回答题。　　Read the following text. Choose the best word(s) for each numbered blank and mark A , B , C or D on ANSWER SHEET 1.
　　All the wisdom of the ages, all the stories that have delighted mankind for centuries, are easily and cheaply _________ 21 to all of us_________ 22 the covers of books -- but we must know how to avail ourselves_________ 23 this treasure and how to get _________ 24 from it. The most _________ 25 people all over the world, are_________ 26 who have never discovered how _________ 27 it is to read good books.
　　I am very interested in people, in meeting them and _________ 28 about them. Some of the most　_________ 29 people I've met existed only in a writer's imagination, then _________ 30 the pages of his book,and then, again, in my imagination. I've found in books new friends, new societies, new words.
　　If I am interested in people,others are interested not so much in who _________ 31 in how. Who in　the books includes everybody from science-fiction superman two hundred centuries in the future all the way back to the first _________ 32 in history;how _________33 everything from the ingenious explanations of Sherlock Holmes _________ 34 the discoveries of science and ways of teaching manners to children.
　　Reading can make our minds feel pleased , _________ 35 means that it is a little like a sport:your eagerness and knowledge and quickness _________ 36 you a good reader. Reading is _________ 37 , not because the writer is telling you something, _________ 38 because it makes your mind work. Your own imagination works together with the _________ 39 or even goes beyond his. Your experience, _________ 40 his, brings you to the same or different conclusions, and your ideas develop as you understand his.