首页
登录
职称英语
Let us consider what science and technology have to contribute to the food p
Let us consider what science and technology have to contribute to the food p
游客
2024-02-12
21
管理
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 [br] 【S7】
选项
答案
O
解析
此处表示增加农业和农夫的生产力。所以应填productivity。
转载请注明原文地址:https://tihaiku.com/zcyy/3443120.html
相关试题推荐
MessagetoyoungChineseinthe21stcenturyFundamentalScience
MessagetoyoungChineseinthe21stcenturyFundamentalScience
MessagetoyoungChineseinthe21stcenturyFundamentalScience
MessagetoyoungChineseinthe21stcenturyFundamentalScience
MessagetoyoungChineseinthe21stcenturyFundamentalScience
Everyoneofusconsidersthecombinationoftheorywithpracticeas______vita
【B1】[br]【B2】A、considersB、alternatesC、rangesD、ranksD词义辨析题。由空格后的leading可知,鼓膜
Themen’sWorldCupisconsideredthemostpopularsportingeventinthewor
Themen’sWorldCupisconsideredthemostpopularsportingeventinthewor
Themen’sWorldCupisconsideredthemostpopularsportingeventinthewor
随机试题
Humoristhemosteffectivemeansofhandlingthedifficultsituations.Itc
Hehasa(prefer)______forvegetablesandfruit.preference此空格在不定冠词a和介词for之间,由此确定
It’sanannualargument.Doweordowenotgoonholiday?Mypartnersaysn
1Owingtothewidespreadexpansionofcasinos,thecostofpathological
如果客户可以通过电子形式询价,那么,为公司数据维持充分安全性的额最佳方式是:A.
如果地下导线分施工导线、基本导线和主要导线三级布设,地下导线测量误差对横向贯通误
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
《中华人民共和国教师法》适用于( )A.各级各类学校的管理 B.中小学学
冠心病的确诊手段是A.胸部X线 B.常规心电图 C.超声心动图 D.动态心
某分项工程计划工程量3000立方米,计划成本15元立方米,实际完成工程量2500
最新回复
(
0
)