九色鹿新概念英语第一册结业考卷作文
you liveWe can read of things that happened 5,000 years ago in the Near East,where people first learned to write.
But there are some parts of the word where even now people cannot write.The only way that they can prerve their history is to recount it as sagas--legends handed down from one generation of another.The legends are uful becau they can tell us something about migrations of people who lived long ago,but none could write down what they did.Anthropologists wondered where the remote ancestors of the Polynesian peoples now living in the Pacific Islands came from.The sagas of the people explain that some of them came from Indonesia about 2,000 years ago.特别的英文
But the first people who were like ourlves lived so long ago that even their sagas,if they had any,are forgotten.So archaeologists have neither history nor legends to help them to find out where the first 'modern men' came from.
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excessiveFortunately,however,ancient men made tools of stone,especially flint,becau this is easier to shape than other kinds.They may also have ud wood and skins,but the have rotted away.Stone does not decay,and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.还钱英语
Why,you may wonder,should spiders be our friends? Becau they destroy so many incts,and incts include some of the greatest enemies of the human race.Incts would make it impossible for us to live in the world; they would devour all our crops and kill our flocks and herds,if it were not for the protection we get from inct-eating animals.We owe a lot to the birds and beasts who eat incts but all of them put together kill only a fraction of the number destroyed by spiders.Moreover,unlike some of the other inct eaters,spiders never do the harm to us or our belongings.
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Spiders are not incts,as many people think,nor even nearly related to them.One can tell the difference almost at a glance,for a spider always has eight legs and inct never more than six. How many spiders are engaged in this work no our behalf? One authority
on spiders made a census of the spiders in grass field in the south of England,and he estimated that there were more than 2,250,000 in one acre; that is something like 6,000,000 spiders of different kinds on a football pitch.misfits
Spiders are busy for at least half the year in killing incts.It is impossible to make more than the wildest guess at how many they kill,but they are hungry creatures,not content with only three meals a day.It has been estimated that the weight of all the incts destroyed by spiders in Britain in one year would be greater than the total weight of all the human beings in the country.
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