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
外语
Let us consider what science and technology have to contribute to the food problem. The simplest way to increase food produc
Let us consider what science and technology have to contribute to the food problem. The simplest way to increase food produc
admin
2013-06-17
66
问题
Let us consider what science and technology have to contribute to the food problem.
The simplest way to increase food production, one might suppose, is to bring more land under cultivation and put more people to work on it. Some of the underdeveloped countries have resorted to this【S1】______approach, without notable success. It contains several fallacies. For one thing, it usually means moving into marginal lands where the soil and climatic conditions give a poor【S2】______. Cultivation may quickly deplete this soil, mining it for pasture or forest growth. It is often possible, of course, to turn such lands into useful farms by agricultural【S3】______; for instance, a sophisticated knowledge of how to use the available water through an irrigation system may reclaim semi-arid grasslands for crop-growing. But the cultivation of marginal lands is in any case unsuccessful unlers it is carried out by farmers Mill a centuries—old tradition of experience or by modern experts with a detailed knowledge of the local conditions and the varieties of crops that are suitable for those conditions. Such knowledge is conspicuously absent in the underdeveloped countries.
【S4】______, we know that highly developed countries have not increased the number of acres tinder cultivation, but on the contrary have【S5】______their marginal lands and steadily reduced the proportion of the population engaged in farming. Efficient farming【S6】______concentration on the most efficient lands, and it results in greater production with fewer people. The problem of the underdeveloped countries, then is to increase the【S7】______of their farms and farmers. This would allow them to industrialize and to feed their people more adequately. It is not easy to【S8】______, however. The peasant farmers are【S9】______and resistant to change in their methods of cultivation. The underdeveloped countries are greatly in need of studies and experiments to help them to【S10】______modern agricultural methods to their own conditions.
A)return I)Nevertheless
B)utilize J)mentions
C)Furthermore K)abandon
D)adapt L)accomplish
E)output M)focuses
F)staightforward N)responsible
G)know-how O)productivity
H)conservative
【S1】
选项
答案
F
解析
空前的指示代词this 是指一句的“提高粮食产量最简单的方法为扩大耕地”就可断定,这是“简单的,易做的”。
转载请注明原文地址:https://kaotiyun.com/show/UQ07777K
0
大学英语四级
相关试题推荐
LearntoloveyourjobAreyoufamiliarwithkudzu—aprolificvinethatwrapsitselfaroundothervegetation,stranglingthe
Tensofthousandsofthepoorestpart-timestudentsaretogetextramoneytohelppayuniversityfeesandmeetrisinglivingco
Distancelearninghasmovedfarawayfromthetraditionalcorrespondencecourse,aimedattheindividualstudentworking【S1】____
A、150yearsago.B、60millionyearsago.C、16millionyearsago.D、150millionyearsago.B文章中直接提到dinosaur在六千万年前消失。故选B。
Afather’srelationshiptohischild’scurrentandfutureacademicsuccessandthelevelofhisorherdevelopmentinacademicp
MessagetoyoungChineseinthe21stcenturyFundamentalSciencehasprovideduswithanincreasinglydetailedandaccurate
Modernmass-productionmethodslowerthecostofmakinggoods,andthusgiveusbettervalues.Atthesametime,Americaningenu
Theyoungarmyofficerwas______totherankofcaptain.
Travelingcanbefunmadeasy.Avacationtriptoanotherpartofthecountryisespecially【C1】______whenthetravelingcond
Travelingcanbefunmadeasy.Avacationtriptoanotherpartofthecountryisespecially【C1】______whenthetravelingcond
随机试题
彭湃曾在领导广东省海陆丰武装起义后召开海陆丰工农兵苏维埃代表大会,选举产生了__________,宣告了第一个中国苏维埃地方政权的诞生。
马克思主义中国化是把马克思主义基本原理同中国的具体实际相结合,这里的具体实际是指()
甲向出版社发送电子邮件,询问该出版社是否出版了某种图书,出版社收到电子邮件之后,马上向甲寄送了一本该种图书,按照图书标称价格的八五折要求甲支付货款。甲认为出版社强人所难,不愿意支付货款。那么,下列表述中正确的是()。
改变振动源与其他刚性结构的连接方式以减振降噪的做法,属于噪声控制技术中的()。
建筑高度超过()m且标准层面积超过()m2的公共建筑,在屋顶宜设直升飞机停机坪或供直升机救助的设施。
资产和负债按照在公平交易中,熟悉情况的交易对方自愿进行资产交换或者债务清偿的金额计量的会计计量属性是()。
自某城市市中心向南、向北分别设若干站点,监测城市气温的时空分布。监测时间为8日(多云)9时到9日(晴)18寸。监测结果如下图所示。据此完成下列小题。图示的最大温差可能是()。
Whenthesuspectedcriminalappearedincourt,thejudgecasta______lookathim.
AnumberofyearsagoIsatdownonastonebenchoutsidetheTeatroAvenidainMaputo,Mozambique,whenIworkedasan【M1】_____
InAmerica,olderpeoplerarelylivewiththeiradultchildren.Butinmanyothercultureschildrenareexpectedtocare【C1】____
最新回复
(
0
)