题目内容：

阅读下面材料，在空白处填入适当的内容或括号内单词的正确形式每空最多填3个单词。

People living in different countries made different kinds of words. Today there are about fifteen hundred 1.(language) in the world. Each contains many thousands of words. A very large dictionary, for example, contains four 2. five hundred thousand words. But we do not need 3.these. To read short stories you need to know only about two thousand words. 4.you leave school, you will learn only one thousand or more. All these words 5. you learn are called your vocabulary. You should try to make your vocabulary 6.(big). Read as many books as we can. There are a lot of books 7.(write) in easy English. You will enjoy them. When you meet 8.new word, look it 9.in your dictionary. Your dictionary is your most 10.(use) book .