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
2023-06-27
69
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、About 1920.
B、Around 1925.
C、Around 1930.
D、About 1935.
答案
A
解析
短文中提到,1920年,美国用于农业生产的马、骡数量有2500多万,“同时一个竞争者开始大量出现。拖拉机……”意即1920年拖拉机开始大量涌现,故A正确。
转载请注明原文地址:https://tihaiku.com/zcyy/2788072.html
相关试题推荐
如今大学生的生活方式正在发生着变化。Nowcollegesanduniversitiesareseeingachangeinthestude
[originaltext]Sinceaunionrepresentativevisitedourcompanytoinformus
[originaltext]Sinceaunionrepresentativevisitedourcompanytoinformus
[originaltext]Whenpeoplecareforanelderlyrelative,theyoftendonotu
[originaltext]Whenpeoplecareforanelderlyrelative,theyoftendonotu
[originaltext](23)AnewbookbytwoprofessorsatPennsylvaniaStateUniver
[originaltext](23)AnewbookbytwoprofessorsatPennsylvaniaStateUniver
[originaltext]Fromthebeginningofhumanhistory,(21)peoplehaveusedoil
[originaltext]Fromthebeginningofhumanhistory,(21)peoplehaveusedoil
[originaltext]Asmoreandmorepeoplelosetheirjobs,nowisperhapstheti
随机试题
V5.1接口由单个4M链路构成,接口时隙和业务通道一一对应,接入网内无集线功能。
依据《GB/T2887-2011计算机场地通用要求规范》的要求,A级机房夏季开
某局长的狱中忏悔,说明()。 A.机关工作人员的职业道德规范需要内化 B.机
X染色体显性遗传病是由于位于X染色体上的显性致病基因引起的疾病,则以下遗传图谱中
D由逻辑电路的基本关系变换可得结果,变换中用到了逻辑电路的摩根定理。
同一薪酬等级中,最高档次的薪酬水平和最低档次之间的薪酬差距是()。A.薪酬级差
商业银行在理财工作中必须建立健全有关规章制度和内部审核程序,并对()进行全面规范
(2021年真题)2021年5月10日,赵某加入甲普通合伙企业成为新合伙人,其对
单、双声道调频发射机相同的测试项目包括信杂比、输出功率和()等。A.非线性失真
患者女,55岁。发现肝硬化已10年。4天前与朋友聚餐时出现呕血,鲜红色,量约10
最新回复
(
0
)