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
2024-02-18
31
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] 【B10】
选项
答案
The government built big dams across the river and stored the water for use during the dry season when there was no rain.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3462020.html
相关试题推荐
Risingunemploymentis______seriousproblemsfortheadministration.A、forcing
Aseriousthreattofarmersinmanypartsoftheworldiserosion.Erosiono
Aseriousthreattofarmersinmanypartsoftheworldiserosion.Erosiono
Aseriousthreattofarmersinmanypartsoftheworldiserosion.Erosiono
Aseriousthreattofarmersinmanypartsoftheworldiserosion.Erosiono
Aseriousthreattofarmersinmanypartsoftheworldiserosion.Erosiono
Aseriousthreattofarmersinmanypartsoftheworldiserosion.Erosiono
Aseriousthreattofarmersinmanypartsoftheworldiserosion.Erosiono
Aseriousthreattofarmersinmanypartsoftheworldiserosion.Erosiono
Themedicalwrongdoingdebateoftenpitsphysicians—whosaythethreatofla
随机试题
Todaywomenearnalmost60percentofallbachelor’sdegreesandmorethan
[originaltext]Q:MayIhaveyourticket,please?[/originaltext][originaltext]Q
Asadebater,Lennywassomethingofa______inthatheoftenusedsubtlydecepti
MayorMichaelBloomberg’sadministrationreceivedamajorsetbackwhena
可摘局部义齿设计中,临床对基牙倒凹的深度和坡度的要求为A.深度>1mm,坡度1m
关于超限运输的认定标准,以下说法正确的是( )。A.驱动轴为每轴每侧双轮胎且装
根据《行政诉讼法》和相关司法解释的规定,对( )的证据材料,人民法院有权主动调取
下列药物中,具有酸碱两性的是A.维生素A B.维生素B C.维生素B D.
采用交直流双电源供电的设备,应具备(____)的措施。(A)防止交流窜入直流回路
接地网开挖抽检时,检查接地体、接地引下线的腐蚀及连接情况,应留有完整的影像资料。
最新回复
(
0
)