Trees are useful to man in three important ways, and they provide 1 with 2 and other products, they give him shade, and they help to prevent drought 3 floods.

　　Unfortunately, in many parts of the world, man has not 4 that the third of these is the most important. In his eagerness to 5 money from trees, he has cut them down in large 6 , only to find that without them he has lost the best 7 he had. And besides, he is usually too 8 to plant and look after new trees. 9 the forests slowly disappear.

　　This does not only 10 that man will have fewer trees. The results are even 11 , for where there are trees, 12 break up soilallowing the rain to sink in and also bind (固定) the soil, thus preventing it from 13 easily; but where there are no trees, the 14 falls on hard ground and flows away, causing floods and carrying away the 15 top-soil. When all the top-soil is gone, nothing remains but worthless desert.

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完形填空

　　Paper was one of the most important inventions in the whole of Chinese history 　1　this invention, much is known about Chinese　2　because records were kept on paper. However, in other parts of the world, much of the history over hundreds of years is completely 　3　.As there was no paper in these countries, no 　4　were kept.

　　It is believed that before 　5　was developed, people in China 　6　keep records by a number of stones together. As soon as 　7　came to development, people carved words on animal bones. 　8　,words were carved on metal pots; examples of these have been 　9　from the 16th to the 3rd centuries BC. 　10　the 2nd and the 15th centuries AD people wrote on 　11　of bamboo or wood and these were tied together to 　12　a book. Although these were much more 　13　than the metal pots, they were still 　14　to read and write, and very 　15　to carry.

　　At the same time another kind of book was 　16　,made from silk. Some silk 　17　that have been found are over 2140 years old. It was 　18　to write and draw on silk. The 　19　was that it was too valuable for 　20　Because it was so 　21　,people developed a 　22　of paper made from the fibbers of 　23　.They used fishing nets, the outside of trees, and 　24　as silk but much 　25　expensive.

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A．From　　　B．As a result of　　　C．Instead of　　　D．In spite of

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A．education　　　B．stories　　　C．culture　　　D．history

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A．discovered　　　B．found out　　　C．known　　　D．unknown

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A．results　　　B．invention　　　C．records　　　D．books

5．

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A．maths　　　B．paper　　　C．space　　　D．science

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A．should　　　B．couldn’t　　　C．must　　　D．used to

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A．language　　　B．writing　　　C．Chinese　　　D．life

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A．However　　　B．So　　　C．Later　　　D．Therefore

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A．found　　　B．hidden　　　C．dug　　　D．shown

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A．Both　　　B．From　　　C．Early　　　D．Between

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A．kinds　　　B．pieces　　　C．piles　　　D．surface

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A．become　　　B．print　　　C．form　　　D．change

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A．useful　　　B．beautiful　　　C．necessary　　　D．important

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A．easy　　　B．difficult　　　C．a waste　　　D．useless

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A．impossible　　　B．careful　　　C．light　　　D．heavy

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A．developed　　　B．produced　　　C．printed　　　D．sold

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A．clothes　　　B．pictures　　　C．books　　　D．papers

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A．easy　　　B．interesting　　　C．important　　　D．possible

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A．question　　　B．problem　　　C．idea　　　D．fact

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A．people　　　B．readers　　　C．everyone　　　D．everyday use

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A．useful　　　B．cheap　　　C．expensive　　　D．soft

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A．kind　　　B．piece　　　C．set　　　D．lot

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A．bamboo　　　B．plants　　　C．grass　　　D．trees

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A．bright　　　B．long　　　C．white　　　D．light

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