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
2024-01-29
40
管理
问题
Over the years, new technologies have changed farming. Change m 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.[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:https://tihaiku.com/zcyy/3404339.html
相关试题推荐
[originaltext][22]Anelderlywomanyesterdaymadealegalclaimagainstad
[originaltext][19]Religiousandprivateschoolsreceivelittleornosuppor
[originaltext][19]Religiousandprivateschoolsreceivelittleornosuppor
[originaltext]Samhadworked30yearsforthesamecompanyandnowhehadt
[originaltext]Samhadworked30yearsforthesamecompanyandnowhehadt
[originaltext]Joeisastudentatacollegeinanurbanarea.Duringhisfi
[originaltext]Joeisastudentatacollegeinanurbanarea.Duringhisfi
[originaltext]Joeisastudentatacollegeinanurbanarea.Duringhisfi
[originaltext][19]Mr.Fosterstartedhispublishingbusinesswithonlyone
[originaltext]Cambridgeisabout90kilometresnortheastofLondon.[16]It
随机试题
YouwillheararadiopresenterinterviewingaveryfamousSeniorHRManager
Consumersandproducersobviouslymakedecisionsthatmoldtheeconomy,but
B
下列对网络服务的描述正确的是()。A.DHCP——动态主机配置协议,动态分配
A.代谢性酸中毒B.呼吸性酸中毒C.代谢性碱中毒D.呼吸性碱中毒E.无酸碱平衡紊
2013年1~5月,保险业平均每月业务及管理费用约为多少亿元?A.180
某景区自然形成悬挑岩石景观平台,由巨厚层状水平岩层组成(如图所示),岩质坚硬且未
A.大 B.小 C.相等 D.无法判断
在中国古代典籍中,古波斯宗教领袖琐罗亚斯德创立的宗教被称为()。A.祆教 B
关于法律事实的说法,正确的是()。A.法律事实不包括事件 B.罢工属于法律事
最新回复
(
0
)