No one knows how man learned to make words. Perhaps he began by making sounds like those made by animals. Perhaps he grunted（发出呼噜声）like a pig when he lifted something heavy. Perhaps he made sounds like those he heard all round him----water splashing（飞溅）, bees humming（嗡嗡作响声）, a stone falling to the ground. Somehow he learned to make words. As the centuries went by, he made more and more new words. This is what we mean by language. 

People living in different countries made different kinds of words. Today there are about fifteen hundred different languages in the world. Each contains four or five hundred thousand words. But we do not need all these. Only a few thousand words are used in everyday life. 

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 language. Your dictionary is your most useful book. 

1．What do we mean by language?                                        A．Sounds made by man.   

B．All the words made by man.   

C．Different kinds of sound.   

D．The way man learns. 

2．From the passage we know that long long ago ______.               [    ] 

A．no one learned how to make sounds or words   

B．animals taught to learn the language 

C．Man learned the language by lifting heavy things, falling to the ground, and so on 

D．Man followed a lot of things in nature to make sounds and words 

3．What is the number of language spoken in the world today?         [    ]   A．500   B．5, 000   C．1, 500   D．15, 000 

4．In which sentence can the word “contain (s)” be put so that it is a right one?      [    ]   

A．I ______several dictionary   

B．Sea water______ salt.   

C．A dog ______four legs 

D．Mr Smith ______glasses on his nose 

5．Which of the following is the best if we want to make our vocabulary larger?    [    ] 

A．To use the words in every day life   

B．To read more books   

C．To read easy books 

D．To look up new words in the dictionary