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
54
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] 【C7】
选项
A、from
B、beyond
C、through
D、over
答案
C
解析
此题考查介词的使用。从题干中可看出这一介词短语应作方式状语,因此C项through“通过……”符合题意。
转载请注明原文地址:http://tihaiku.com/zcyy/3206340.html
相关试题推荐
Everyprofessionortrade,everyartandeverysciencehasitstechnicalvoc
Everyprofessionortrade,everyartandeverysciencehasitstechnicalvoc
Everyprofessionortrade,everyartandeverysciencehasitstechnicalvoc
TechnologyoftheIntellectualLifeItiscuri
TechnologyoftheIntellectualLifeItiscuri
Whytheinductiveandmathematicalsciences,aftertheirfirstrapiddevelo
Itisacuriousparadoxthatwethinkofthephysicalsciencesas"hard",
Allexpertsagreethatthemostimportantconsiderationwithdietdrugsiscaref
Beingconsideredaleaderinoursocietyistheultimatecompliment."Leade
Beingconsideredaleaderinoursocietyistheultimatecompliment."Leade
随机试题
[img]2014m3s/ct_etoeiclm_etoeiclzp_0501_201331[/img][br][originaltext](A)She
Mencanbefoundtodayworkingroutinelyinawidevarietyofjobsonceheldnea
已知二端网络的Y参数为: 则该二端口网络满足()A.无源性 B.互易性
止嗽散的组成药物中含有()A.百合 B.荆芥 C.苏梗 D.紫苏
幼儿的活动室应()。A.尽量安装空调 B.以自然通风形式为主 C.使用变速风
(2020年真题)外汇掉期交易中,如果发起方为近端卖出、远端买入,则远端掉期全价
项目中间评价又根据启动时点不同,包括项目实施过程中从立项到项目完成前很多种类,其
税与费是筹集财政收入的不同形式,下列有关费的表述,正确的有()。A.收取主
下列废气排放应执行《大气污染物综合排放标准》的是( )。A.储油库油气 B.
5岁患儿,自幼青紫,有蹲踞现象,X线胸片示肺血少。 患儿的听诊特点是 A.胸
最新回复
(
0
)