__14__ the fields are on the hillsides. Farmers can level their fields and make them __15__.
At the beginning of the __16__ there have been about 7,000 __17__ people on earth. We now ought to __18__ every bit of the soil. __19__, where will such a large __20__ grow their food?
语篇解读:本文是一篇说明文。怎样才能让我们赖以生存的土壤更好地为我们服务呢?又怎样才能减少土壤的流失呢?本文将给出答案。
1.A.died B.made
C.brought D.taken
解析:选D taken from ...是过去分词短语作定语,修饰useful materials。
2.A.matter B.gases
C.goods D.rubbish
解析:选A waste matter废弃物,这里指"(动物的)粪便"。
3.A.eats B.needs
C.feeds D.enjoys
解析:选B 土壤"需要"食物,指上文中的dead plants和waste matter from animals。
4.A.give B.produce
C.supply D.develop
解析:选C supply ...with ..."把......提供给......"。
5.A.man B.trees
C.plants D.animals
解析:选C 直接依靠土壤而生存的只有植物,而B项太片面。
6.A.body B.blood
C.bone D.waste
解析:选D animal waste"动物粪便",即上文提到的waste matter。
7.A.poisons B.fertilizers
C.powders D.medicines
解析:选B 改良土壤的应该是"化肥(chemical fertilizer)"。poison"毒药,毒物";powder"粉末";medicine"药"。只有B项符合语境。
8.A.harm B.good
C.help D.favour
解析:选B do good"有益处,有好处"。