1.All our food comes from the soil(土壤).Some of us eat meat,but animals live on plants.If there were no plants,we should have no animals and meat.So the soil is necessary for life.
The top of ground is usually covered with grass or other plants.Plants grow in soil,which has a dark color.This dark soil is humus,dead leaves,dead plants and animals waste make it,but this takes a long time  When the humus has been made,plants can grow well in it.All soil needs food.If we don't give it any,the plants will be weak.Animals waste is the best food for the soil,but chemical fertilizers(化肥) are also very useful.The same crop should not be grown in the same place every year,it is better to have a different crop.A change of crop and the use of a good fertilizer will keep the land in good condition
When the soil is dry,the wind blows it away.Sometimes heavy rain carries the humus down to a river.People should grow more and more trees and grass to stop wind from carrying the humus away.It takes hundreds of years to make humus,and so we must save every bit of it.Without soil,where can we grow food?

 62.From the text,we know people live onA
A.soil         B plant       C.meat      D.a(chǎn)nimal
63.The underline word"humus"meansB in Chinese.
A土壤       B腐殖土       C微生物      D.粘土
 64.We shouldC to keep the soil.
A  kill more animals       B make more humus
C.grow more trees and grass       D.give more fertilizers
 65.The best title of this text should beB.
A  Humus is hard to make         
B Soil is necessary to people
C  The same crop can't be grown in the same place every year
D  Soil's food is chemical fertilizers.

分析 我們的食物來源于土壤,土壤對我們很重要,短文介紹了土壤及土壤與農(nóng)作物的關(guān)系.

解答 62.A 推理判斷題 根據(jù)"All our food comes from the soil(土壤).Some of us eat meat,but animals live on plants.If there were no plants,we should have no animals and meat"可知,人們的食物來源于土壤,故答案為A
63.B 推理判斷題 根據(jù)"dead leaves,dead plants and animals waste make it"可知,humus是由枯死的樹葉、動植物形成的,故"humus"意為"腐殖土",答案為B
64.C 細(xì)節(jié)理解題 根據(jù)"People should grow more and more trees and grass to stop wind from carrying the humus away"可知,我們應(yīng)該種樹、種草來保護(hù)土壤,故答案為C
65.B 推理判斷題 短文主要介紹了我們的食物來源于土壤,土壤對我們很重要,故答案為B Soil is necessary to people

點(diǎn)評 做這道題時(shí)要先通讀全文,弄清短文大意,然后根據(jù)相關(guān)句子選出正確答案,最后仔細(xì)檢查.

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