首页
登录
职称英语
[originaltext] Over the years, new technologies have changed farming. Change
[originaltext] Over the years, new technologies have changed farming. Change
游客
2023-06-29
61
管理
问题
Over the years, new technologies have changed farming. Change in a general direction is a trend. Yet people often recognize trends only when they consider the past. Today, we look back at some trends in American agriculture. [22]In 1920, America had more than 25 million horses and mules. Most were used for farm work. [22]Around the same time, a competitor began to appear in large numbers.
Tractors could turn soil, pull loads and speed harvests—and they could do it better. More tractors meant fewer horses and mules.
[23]By the 1960s, the numbers of these work animals settled to where they remain today. That is about one-tenth the levels in 1920.
Yet even the demand for tractors had its limits. Their numbers have been slowly decreasing since 1982. Experts say farmers can do more with less now because of new technologies. As tractors replaced horses and mules, farmers no longer needed to raise crops to feed work animals. Oats have long been food for horses and mules. In 1954, American farmers planted over sixteen million hectares of oats. By 2000, that was down to less than one million hectares. So what did the farmers do with the extra land? More and more farmers began to plant a new crop around the same time that the tractor became popular. It was the soybean. The soybean is one of the oldest plants harvested. Yet it was not planted widely in the United States until the 1920s. By the year 2000, close to 30 million hectares were planted with soybeans. [24]It is the nation’s most important crop for high-protein animal feed and for vegetable oil. [25]In fact, soybeans are the second most valuable crop grown by American farmers after corn. Much of the soybean production goes to exports.
22. In which year did tractors begin to appear in large numbers?
23. How many horses and mules did America have in the 1960s?
24. What is America’s most important crop for high-protein animal feed and for vegetable oil?
25. What is the most valuable crop grown by American farmers?
选项
A、Over 16 million.
B、Over 3.5 million.
C、Over 1 million.
D、Over 2.5 million.
答案
D
解析
短文说,1920年,美国用于农业生产的马、骡数量总共有2500多万,此后一路减少,到20世纪60年代,数目趋于稳定,迄今没有变化。目前约有1920年的1/10。由此可计算出,20世纪60年代美国用于农业生产的马、骡牲口共250多万,故D正确。
转载请注明原文地址:http://tihaiku.com/zcyy/2792697.html
相关试题推荐
如今大学生的生活方式正在发生着变化。Nowcollegesanduniversitiesareseeingachangeinthestude
[originaltext]Culturecanandshouldplayaroleinbringingpeopletogethe
[originaltext]Culturecanandshouldplayaroleinbringingpeopletogethe
[originaltext]Iamnotonlyapainter,butastudentofart.Sometimes,[20]
[originaltext]Alllanguagesareequalfromalinguisticpointofview.Iti
[originaltext]Alllanguagesareequalfromalinguisticpointofview.Iti
[originaltext]Alllanguagesareequalfromalinguisticpointofview.Iti
[originaltext]M:[9]TheRepublicanPartyinAmericaisopposingstemcellresear
[originaltext]M:I’msorryI’mlate,Rose.W:That’sallright,Vic.Myhousei
[originaltext]W:Excuseme,wherecanIfindtheseriesHairyPotter?Ihavebe
随机试题
Surprisingly,nooneknowshowmanychildrenreceiveeducationinEnglishho
TheArtofFriendshipMakingFriendsinMidlifeOne
在汇编指令中,操作数在某寄存器中的寻址方式称为()寻址。A.直接 B.变址
新员工小王在2011年的绩效考核中达到了卓越标准,她可以获得( )的激励待遇。
“生旦净末丑”是京剧的行当,其中“净”是( )。 A.男角
某消防技术服务机构,非法转让资质,消防部门依法责令其改正,并处一万五千元罚款,该
关于行政诉讼二审程序,下列不正确的说法有:()A.当事人不服一审判决,有权在判
炒炭后产生止血作用的饮片是A.蒲黄 B.槐花 C.荆芥 D.大蓟 E.小
通常情况下,工业项目能耗指标是否先进、节能效果是否显著的重要评价指标是()
施工方在施工现场共有3台机械设备,2台自有,1台租赁。施工台班2000元/日,租
最新回复
(
0
)