首页
登录
职称英语
A serious threat to farmers in many parts of the world is erosion. Erosion o
A serious threat to farmers in many parts of the world is erosion. Erosion o
游客
2023-07-17
26
管理
问题
A serious threat to farmers in many parts of the world is erosion. Erosion occurs if a large area of land is 【B1】______ of trees and is then badly treated by the farmers. The rain and wind may 【B2】______ wash away, or blow away much of the topsoil. When this happens, 【B3】______ of wheat or corn become weaker and weaker until nothing grows well. If erosion continues, it will turn good land into a desert.
In the past when erosion 【B4】______ , farmers sometimes moved to a new place to farm. Sometimes they could not move, but continued to try to grow food in the 【B5】______ soil. This caused them to sink into 【B6】______ . Soon some people 【B7】______ that there was little rich, 【B8】______ soil in the world, so the government began to try to stop erosion.
One of the first experiments to stop erosion began in the United States in 1933. The experiment was carried out in the area of the Tennessee River. 【B9】______ As a result, most of the people living around the Tennessee River were very poor.
【B10】______ The government workers also helped farmers to fertilize their soil and to learn new farming methods which could stop erosion.
At the beginning, the farmers were not interested. But soon, good healthy crops began to appear on the land where new methods were used. 【B11】______ The great success of this experiment had led to similar projects in the other parts of the world. [br] 【B3】
选项
答案
crops
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2845749.html
相关试题推荐
Someguidelinesthatadvisepeoplehowtoloseweightareseriouslyflaweda
Someguidelinesthatadvisepeoplehowtoloseweightareseriouslyflaweda
Someguidelinesthatadvisepeoplehowtoloseweightareseriouslyflaweda
Someguidelinesthatadvisepeoplehowtoloseweightareseriouslyflaweda
TherecessionistakingaserioustollonAmericanretail,bute-commerceco
TherecessionistakingaserioustollonAmericanretail,bute-commerceco
TherecessionistakingaserioustollonAmericanretail,bute-commerceco
TherecessionistakingaserioustollonAmericanretail,bute-commerceco
TherecessionistakingaserioustollonAmericanretail,bute-commerceco
TherecessionistakingaserioustollonAmericanretail,bute-commerceco
随机试题
[originaltext]M:I’msorryI’mlate,Cindy.W:That’salltight,Joe.Myhouse
Highschoolstudentswho,aftergraduation,wouldliketocontinuetheiredu
ArtificialIntelligence(AI)A)Weoftendon’tnoticeit,butartificiali
2007年6月选择徒步入境的人数约占入境总人数的()。A.23% B.
测绘计量标准在合格证书期满前(),应按规定向原发证机关申请复查。A:3个月B:
Questionsrefertothefollowingletter
( )是指银行等金融机构之间相互借贷资金余额,以调剂资金余缺。A.同业拆借
关于企业采购管理,下列说法正确的有()。A.企业采购管理的总目标是以最低的总
(2020年真题)人力资源管理的概念出现于20世纪五六十年代,它在80年代中后期
蛛网膜下腔出血鉴别诊断
最新回复
(
0
)