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
2016-12-22
60
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. 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/EpY7777K
0
大学英语四级
相关试题推荐
A、Atleast14milesanhour.B、Atleast40milesanhour.C、Atmost40milesanhour.D、Atmost14milesanhour.C细节题。文中说这个小域的限
A、Itwasraining.B、Itwasclear.C、Itwassnowing.D、Itwascloudy.C细节题。从文中可知那天下了大雪,所以医生在出诊时看不清路,开车开了很久才到。
A、Thejobmarket.B、Theirformerschools.C、Goodschools.D、Thelocalhighschoolorcolleges.D细节题。文中提到许多人在当地的高中或大学上夜校,接受成人教育。
A、Shootingthem.B、Poisoningthem.C、Askingthelocalhunttohuntforthem.D、Alloftheabove.D细节题。短文中提到了三种减少狐狸的方法:枪杀、投毒或请求当地
Itwasoncethoughtthatairpollutionaffectedonlytheareaimmediatelyaroundlargecitieswithfactoriesandheavyautomobil
Itwasoncethoughtthatairpollutionaffectedonlytheareaimmediatelyaroundlargecitieswithfactoriesandheavyautomobil
越来越多的中国富人把高尔夫当作其财富和生活方式的标志。直到20世纪80年代,经济预测家才意识到高尔夫运动可以作为一种吸引外资的手段。1984年,中国在广东省建起了第一个高尔夫球场,当时的设计者是高尔夫球星阿诺德·帕尔默(ArnoldPalmer)先生。据
上海是中国的工商业中心,是繁忙的港口城市,是中国的科技中心,同时也是一座发达的经济大都市。在20世纪二三十年代,上海就深受西方文化的影响,被称为“冒险家的乐园(paradise)”。随着商业的发展,大量外国公司在此落户。新的观念也随着商人和洋人的到来而传人
我国现有艾滋病病毒(HIV)感染者以青壮年为主,大多在农村,局部地区正面临集中发病和死亡的高峰。从艾滋病病毒传播和流行的规律看,我国艾滋病疫情已经处在由高危人群向普通人群大面积扩散的临界点。目前,我国艾滋病病毒感染者的数量已居亚洲第二位。特别是近年来艾滋病
随机试题
甲向首饰店买钻石戒指一枚,标签表明该钻石为“天然钻石”买回后被人告知实为人造钻石。甲遂多次与首饰店交涉,历时一年零六个月,未果。现甲欲诉请法院撤销该买卖关系,其主张能否得到支持( )。
领取《营业执照》的,设立登记费为多少元?()。
幕墙的四性检验报告包括那些项目()。
某沿海城市电力隧道内径为3.5m,全长4.9km,管顶覆土厚度大于5m,采用顶管法施工,合同工期1年,检查井兼作工作坑,采用现场制作沉井下沉的施工方案。电力隧道沿着交通干道走向,距交通干道侧石边最近处仅2m左右。离隧道轴线8m左右,有即将入地的高
2014年初,某公司短期借款、长期借款、应付债券科目均无余额。该公司2014年~2015年发生有关经济业务如下:(1)2014年3月31日,从中国银行借入2年期,年利率6%,到期一次还本付息不计复利的长期借款200万元,当日用于购买一台不需要安装
从业人员若在工作中违背职业纪律,正确的态度是()
杜威的教育思想的核心,一般被概括为()
广州、深圳、佛山三市的科技项目数约占广东省的:
各种感觉能力都开始减退是在()
简述诚实信用原则的含义和功能。(2011一专一53)
最新回复
(
0
)