求解一道英语阅读题No one knowshow people learnt to make words.

求解一道英语阅读题No one knowshow people learnt to make words.
No one knowshow people learnt to make words.Perhaps they began by making sounds like thosemade by animals.Perhaps they grunted(发出呼噜声) like a pig when they liftedsomething heavy.Long time ago,they made sounds like those they heard aroundthem.Anyway,they learnt to make words.As the centuries went by,they mademore and more new words.This is what we mean by language.
People livingin different countries have made different kinds of words.Today there areabout fifteen hundred different languages in the world.Each contains four or five hundredthousand words.But we do not need all these.Only a few thousand words areused in our lives.
The words you knoware called your vocabulary(词汇量).You should try to makeyour vocabulary bigger by reading as many books as you can.There are a lot ofbooks written in easy language.Your dictionary is your most useful book
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