首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、Over 16 million. B、Over 3.5 million. C、Over 1 million. D、Over 2.5 million. D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
A、Over 16 million. B、Over 3.5 million. C、Over 1 million. D、Over 2.5 million. D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
admin
2019-04-23
19
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. 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. 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. It is the nation’s most important crop for high-protein animal feed and for vegetable oil. 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:https://kaotiyun.com/show/imZ7777K
0
大学英语四级
相关试题推荐
近几年来,庙会已经成为人们欣赏民间艺术和体验传统文化的首选之地。
在中国,人们见面时喜欢问:“你去哪儿?”或“你吃了吗?”大多数时候,人们并非真正想知道你要去哪里或吃饭了没有。实际上,那只是一种打招呼的方式。与西方的风俗相似,当你与一个陌生人开始交谈时,诸如天气、食物或爱好之类的话题可能是打破坚冰的不错选择。询问私人问题
A、Inthe19thcentury.B、Inthe18thcentury.C、Inthe17thcentury.D、Inthe16thcentury.B短文提到,“该传统最终在18世纪传入英格兰和苏格兰。”故选B。由选项知
A、Writinganarticleinthenewspapers.B、Dumpinggarbageonthecitylawn.C、Publishinganeditorialtoshowdisapproval.D、Org
Manyparentsmaythinkthateachnewsibling(兄弟姐妹)offerstheirchildrenthegiftofcompanionship.Butwhilewetendtothink
A、Watchingtraditionalplays.B、Visitingthemagnificentlibraries.C、Boatingontheriver.D、Cyclinginnarrowstreets.C短文说,“旅
A、Anexportsalesmanworkingoverseas.B、Atraineeworkingthrougheverybranch.C、Aproductionmanagerinabranch.D、Apolicy
A、ShewantedDr.Tylertosignonherschedulecard.B、ShewantedDr.Tylertodeterminethenumberandvarietyofhercourses.
Anewstudysuggeststhatthemoreteenagerswatchtelevision,themorelikelytheyaretodevelopdepressionasyoungadults.B
Itseemstomethattoday’sprime-timeleaderneedsatop-5listthatclearlylaysouthisorherpriorities.Whetheryou’rerun
随机试题
外源性凝血系统的作用起始于
下列哪些体征提示髋关节有屈曲畸形
在判断甲状腺结节良恶性时,下列哪项不恰当
单独或者合计持有公司股份3%以上的股东,可以在股东大会召开()前提出临时提案并书面提交董事会。
旅游经营者准许他人挂靠其名下从事旅游业务,造成旅游者人身损害、财产损失,旅游者请求旅游经营者与挂靠人承担连带责任的,人民法院不予支持。()
比较性组织者
甲是某化学实验室的研究员,现实验室有A、B、C三种浓度分别为60k,、12%、16%的硫酸溶液,甲将B溶液的1/3与A溶液混合,得到8%的硫酸溶液,将剩下的B溶液与C溶液混合,得到13%的硫酸溶液,求原A、C溶液的质量比:
设一棵完全二叉树共有700个结点,则此二叉树中的叶子结点数为()。
Cubesaren’tusuallythego-toshapewhencreatinganobjectthat’smeanttomovearound,but【C1】________inSwitzerlandhavecre
A、Foundajobinabigfirm.B、Triedtogetajob.C、Gambledallthetime.D、Becameamanager.B本题考查考生对信息的掌握。文章中直接提到MatthewHobb
最新回复
(
0
)