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
2023-06-25
29
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/2782555.html
相关试题推荐
[originaltext]Americansthinkagreatdealabouttime.Theyconstantlyrefe
[originaltext]Mostkidsaremuchbetterthantheirparentsatprogrammingt
[originaltext]Someoftheplanet’smostpreciousanimalsandplantsaredis
[originaltext]Someoftheplanet’smostpreciousanimalsandplantsaredis
[originaltext]Someoftheplanet’smostpreciousanimalsandplantsaredis
[originaltext]Fortwenty-fiveyears,Iwasafull-timethief,specializing
[originaltext]Fortwenty-fiveyears,Iwasafull-timethief,specializing
[originaltext]"Gototheplaygroundandhavefun",parentswilloftensayt
[originaltext]Doyourememberatimewhenpeoplewerealittlenicerandge
[originaltext]Doyourememberatimewhenpeoplewerealittlenicerandge
随机试题
In1966,TheyRefusedtoSue?NotNowWheneverthephrase"c
[originaltext]MarketingMarketingc
ThereareafewsmallthingsthatIdon’tlikeaboutmyjob,but________it’senj
Thehigheranarea’slivingstandardis,______(这一地区的辍学率就越低).theloweritsdropou
下列各项,不是胎儿生长受限的中医证型是A、肾气亏虚 B、阴虚内热 C、气血虚
肿瘤切除后,5年治愈率是指A.肿瘤切除后5年未复发的病人,占切除总数的百分比
在PowerPoint中,新建演示文稿已选定某特定的应用设计模板,在该文稿中插入
下列情形中,不能作为坏账损失在计算应纳税所得额时扣除的是()。A.因自然灾害
某工程网络计划中,已知工作M的自由时差为5天。在该网络计划的实施过程中检查发现,
下列各项情形中,根据企业会计准则的规定应当重述比较期间每股收益的有( )。A.
最新回复
(
0
)