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
2024-02-10
41
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. 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.[33]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 fanners 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.
32. In which year did tractors begin to appear in large numbers?
33. How many horses and mules did America have in the 1960s?
34. What is America’s most important crop for high-protein animal feed and for vegetable oil?
35. 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。由此可知D正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3438315.html
相关试题推荐
[originaltext]Tenyearsagoasmallboyfelloffhisbicyclebecausehewan
[originaltext]SomestudentsattheOpenUniversityleftschool20yearsago
[originaltext]SomestudentsattheOpenUniversityleftschool20yearsago
[originaltext]SomestudentsattheOpenUniversityleftschool20yearsago
[originaltext]Australia,thelastcontinenttobe"discovered",wassighted
[originaltext]W:Hi!WelcometoRentalPropertyManagement,HowmayIhelpyou?
[originaltext]W:Ihaven’thadmuchexerciselately.Myonlyrecreationhasbee
[originaltext]W:Ihaven’thadmuchexerciselately.Myonlyrecreationhasbee
[originaltext]W:Ihaven’thadmuchexerciselately.Myonlyrecreationhasbee
[originaltext]W:Ihaven’thadmuchexerciselately.Myonlyrecreationhasbee
随机试题
Revisionisrethinking,buttwomisconceptionsarebynomeansuncommonamon
[originaltext]M:Well,Cynthia,ourfirstsemesteratuniversityisalmostover
[originaltext]W:WelcometothiseditionofTalkoftheNation.We’retalkingt
ThereportfromtheBureauofLaborStatisticswasjustasgloomyasanticip
中央银行在公开市场上大量抛售有价证券,意味着货币政策()。A.放松 B.收紧
结构在规定的时间内,在规定的条件下,完成预定功能的能力称为结构的()。A.安
苏子降气汤的组成药物中含有A.干姜、茯苓B.肉桂、当归C.半夏、人参D.柴胡、紫
A.黄体酮 B.醋酸氢化可的松 C.己烯雌酚 D.丙酸睾酮 E.米非司酮
商业银行在计量资本充足率时,应当从核心一级资本中全额扣除商誉、其他无形资产项目,
下列施工现场环境污染的处理措施中,正确的有()。A.固体废弃物必须单独储存
最新回复
(
0
)