题目内容：

People living in different countries made different kinds of words.————the dictionary is a usef
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优质解答

People living in different countries made different kinds of words.Today there are about fifteen hundred languages in the world.Each contains many thousands of words.But we do not need all these.To read short stories,you need to know only about two thousand words.Before you leave school,you will learn only one thousand more.
The words you know are called your vocabulary.You should try to make your vocabulary bigger.Read as many books as you can.There are plenty of books written in easy English for you to read.You will enjoy them.When you meet a new word,find it in your dictionary.Your dictionary is your most useful book.