首页
登录
职称英语
Let us consider what science and technology have to contribute to the food
Let us consider what science and technology have to contribute to the food
游客
2023-11-21
10
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 【C1】______ cultivation and put more people to work on it. Some of the underdeveloped countries have resorted to this 【C2】______ approach, without notable success. It contains several fallacies. For one thing, it usually means 【C3】______ into marginal lands where the soil and climatic conditions give a poor 【C4】______ . Cultivation may quickly deplete this soil,【C5】______ it for pasture or forest growth. It is often possible, of course, to turn such lands into useful farms by agricultural 【C6】______ ; for instance, a sophisticated knowledge of how to use the available water【C7】______ an irrigation system may reclaim semi-arid grasslands for crop-growing. But the cultivation of marginal lands i6 in any case unsuccessful【C8】______ it is carried out by farmers with a centuries - old tradition of experience or by modern ex pelts with a detailed knowledge of the【C9】______ conditions and the varieties of crops that are suitable for those conditions. Such knowledge is【C10】______ absent in the underdeveloped countries.
【C11】______ , we know that highly developed countries have not increased the【C12】______ of acres under cultivation, 【C13】______ on the contrary have 【C14】______ their marginal lands and steadily reduced the proportion of the population engaged in farming. Efficient farming【C15】______ concentration on the most efficient lands, and it results in greater production with【C16】______ people. The problem of the underdeveloped countries, then is to increase the【C17】______ of their farms and farmers. This would allow them to industrialize and to feed their people more adequately. It is not easy to【C18】______ , how ever. The farmers are conservative and resistant to change【C19】______ their methods of cultivation. The underdeveloped countries are greatly in need of studies and experiments to help them to【C20】______ modern agricultural methods to their own conditions. [br] 【C12】
选项
A、numbers
B、number
C、quantity
D、quantities
答案
B
解析
此题考查词的用法,增加开垦的数量。B项符合题意。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3206345.html
相关试题推荐
TheCloningTechnologyI.Thedifference
TheCloningTechnologyI.Thedifference
TheCloningTechnologyI.Thedifference
TheCloningTechnologyI.Thedifference
TheCloningTechnologyI.Thedifference
TheCloningTechnologyI.Thedifference
TheCloningTechnologyI.Thedifference
[originaltext]J:Becausein1987theDepartmentofEducationandScienceestabl
[originaltext]J:Becausein1987theDepartmentofEducationandScienceestabl
[originaltext]J:Becausein1987theDepartmentofEducationandScienceestabl
随机试题
[originaltext]W:IcouldhavemadethehighestgradeonthisexamifIhadn’tm
Whatarethefiretrianglethatthefirefightersreferto?[originaltext]Ther
在经济衰退期,企业一般应该建立投资标准并放弃次要利益。()
公司在经营活动中,应当体现的基本原则包括()。 Ⅰ.合法经营原则 Ⅱ.自主经
属于一类毒性的药材是A.信石B.附子C.雪上一枝蒿D.生半夏E.甘遂
引起小儿"冬季腹泻"最常见的病毒是A.腺病毒B.轮状病毒C.柯萨奇病毒D.肠道病
女,32岁。发热、腰痛、尿频、尿急、尿痛1天来院检查,以往无类似发作史。查:体温
以下活动纳入企业会计对象的是()。A.企业股东的业务开支 B.企业债权人的业
商业银行人力资源开发与管理的主要内容不包括()。A.人力资源规划 B.员
“十三五”时期深化投资体制改革的政策措施有( )。(新教材已删除) A.确
最新回复
(
0
)