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
考研
【F1】The agricultural sciences deal with the challenges of food and fibre production and processing. They include the technologie
【F1】The agricultural sciences deal with the challenges of food and fibre production and processing. They include the technologie
admin
2016-10-15
63
问题
【F1】
The agricultural sciences deal with the challenges of food and fibre production and processing. They include the technologies of soil cultivation, crop cultivation and harvesting, animal production, and the processing of plant and animal products for human consumption and use.
Food is the most basic human need.【F2】
The domestication and cultivation of plants and animals beginning almost 10,000 years ago were aimed at ensuring that this need was met, and then as now these activities also fit with the relentless human drive to understand and control the Earth ’s biosphere.
Over the last century and a half, many of the world’s political leaders have recognized what India’s Jawaharlal Nehru did, that "Most things except agriculture can wait. " Scientific methods have been applied widely, and the results have revolutionized agricultural production. Under the conditions of prescientific agriculture, in a good harvest year, six people can produce barely enough food for themselves and four others. Advanced technologies have made it possible for one farmer in the United States, for example, to produce food for more than 100 people.【F3】
The farmer has been enabled to increase yields per acre and per animal; reduce losses from diseases, pests, and spoilage; and augment net production by improved processing methods.
Until the 1930s, the benefits of agricultural research derived mostly from labour-saving inventions. Once the yield potentials of the major economic crops were increased through agricultural research, however, crop production per acre increased dramatically.【F4】
Between 1940 and 1980 in the United States, for example, per-acre yields of corn tripled, those of wheat and soybeans doubled, and farm output per hour of farm work increased almost 10-fold as capital was substituted for labour.
【F5】
New techniques of preserving food products made it possible to transport them over greater distances, in turn facilitating adjustments among locations of production and consumption, with further benefits to production efficiency
.
From a global perspective, the international flow of agricultural technology allows for the increase of agricultural productivity in developed and developing countries alike. From 1965 to 1985, for example, world trade in grains tripled, as did net exports from the United States. In fact, by the 1980s more than two-fifths of U. S. crop production was exported, making U. S. agriculture heavily dependent upon international markets.
【F2】
选项
答案
大约1万年前,人类开始种植植物,驯化并养殖动物。其目的在于确保人类对食品的基本需求能够得到满足。当时,和现在一样,这些活动也符合人类强烈的愿望:要理解并且支配地球生物圈。
解析
转载请注明原文地址:https://kaotiyun.com/show/tUoZ777K
0
考研英语一
相关试题推荐
Ifyougodowntothewoodstoday,youmaymeethigh-techtrees—geneticallymodifiedtospeedtheirgrowthorimprovethequalit
Afterclashesbetweenriotpoliceandprotesters,workersattheKeihinHotelinTokyowereforciblyejectedonJanuary25th.Th
PresidentBarackObamaclaimedprogressWednesdayinhissecond-termdrivetocombatclimatechangebutsaidmoremustbedonet
Marriageis,formanypeople,theirmostimportantrelationship,thesourceofmuchhappiness,and,forsome,evenaddsextraye
Doctorshavetreatedthefirstreportedcaseof"Internetaddictiondisorder"broughtonbyexcessiveuseofGoogleGlass.I
Doctorshavetreatedthefirstreportedcaseof"Internetaddictiondisorder"broughtonbyexcessiveuseofGoogleGlass.I
Expressionismisanartisticstyleinwhichtheartistseekstodepictnotobjectiverealitybutratherthesubjectiveemotions
WhenNeilArmstrongandBuzzAldrinreturnedfromthemoon,theircargoincludednearlyfiftypoundsofrockandsoil,whichwer
WhenNeilArmstrongandBuzzAldrinreturnedfromthemoon,theircargoincludednearlyfiftypoundsofrockandsoil,whichwer
随机试题
样本
甲与乙结婚后因无房居住,于2000年8月1日以个人名义向丙借10万元购房,约定5年后归还,未约定是否计算利息。后甲外出打工与人同居。2004年4月9日,法院判决甲与乙离婚,家庭财产全部归乙。下列哪些说法是错误的?
美国人露丝欠法国人凯特2500美元,露丝的好友中国人李某为帮助露丝了结债务,自愿向凯特支付了一笔款项,却误付为3500美元。后引发纠纷,李某诉凯特至中国法院。经查,露丝、凯特、李某均为在德国的留学生,从2009年起他们就一直在德国居住。根据《涉外民事关系法
防治环境噪声污染的基本方法中,()是一种最常见的防治环境噪声污染的手段。
建设项目()是指建设项目按《中华人民共和国合同法》,以合同方式确定建设项目有关各方之间的权利义务关系,是建设项目管理的核心。
影响钢筋混凝土粘结强度的主要因素有()。
在抵押贷款证券化过程中,建立一个独立的特殊中介机构SPV的主要目的是()。
教学是学校的_____工作,是贯彻国家的教育方针,实现教育目的的_____。
在Word中,查找功能可以实现准确的文本定位,用户可以用查找功能查找文档中的()。(1)汉字字符(2)英文字符(3)特殊符号(4)图片
Youwillhearaconversationbetweenasociologistandaretailer.Theytalkaboutwhatisgoingtoinfluencethelifestyleand
最新回复
(
0
)