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 produ
Let us consider what science and technology have to contribute to the food problem. The simplest way to increase food produ
admin
2010-02-17
69
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.
【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:https://kaotiyun.com/show/QknK777K
0
专业英语四级
相关试题推荐
A、Tohelpstudentstobetterrememberpoems.B、Tofacilitatetheprocessofcomposingpoems.C、Toactivateone’sinnerearautom
Untilwhatagedoyouthinkpeopleshouldbeencouragedtoremaininpaidemployment?Insomecountriestheaverageworkeris
HotSpotsinCrossCulturalCommunicationI.【T1】________Conversations—Modesofaddress—【T2】______—Levels
WillChineseReplaceEnglish?ChineselanguagehasmanyadvantagesoverEuropeanlanguagesandthespeakerthinksChines
PassageOne(1)Themultimilliondollarbraintrainingindustryisunderattack.InOctober2014,agroupofover100emine
PassageTwo(1)Whatwouldtheholidaysbewithoutlotsoftinytwinklinglights?Lesscolorfulandfestive—butalsoalot
PassaaeOneCaneatingacheeseburgerbeconsideredanactofwar?Yes,butonlyifyouunderstandthedelicateandintricat
Ifyouputwateronthestoveandheatitup,itwillatfirstjustgethotterandhotter.Youmaythenconcludethatheatingw
Whydidmoviesdobetterthantheater?
Certainlynocreatureintheseaisodderthanthecommonseacucumber.Alllivingcreature,especiallyhumanbeings,havetheir
随机试题
这个标志的含义是提醒车辆驾驶人前方是桥头跳车较严重的路段。
患者,29岁,右胫腓骨中段闭合性骨折后行手法复位石膏外固定24小时,出现患肢持续性剧烈疼痛,进行性加重此时首先采取的措施应为()
消化性溃疡中的腹痛特点错误的是
A、吸气性呼吸困难B、呼气性呼吸困难C、混合性呼吸困难D、劳力性呼吸困难E、静息呼吸困难。下列疾病可产生哪种类型的呼吸困难男性,18岁,5岁时患麻疹后咳嗽迁延不愈,渐出现喘息,反复发作,体检:呼气延长,双肺散布哮呜音。心脏(-)
患者,腰膝痠冷,精神不振,怯寒畏冷,阳痿遗精,大便溏薄,尿频而清。经中医诊断为肾阳不足,医生开具处方为右归丸,其方药组成为肉桂、炮附片、鹿角胶、盐杜仲、菟丝子、酒萸肉、熟地黄、枸杞子、当归、山药。方中炮附片的炮制方法是()
下列属于抽象行政行为的有:()
期货投资者保障基金的筹集、管理和使用的具体办法,由国务院期货监督管理机构会同( )制定。
正月是农历的元月,古人称夜为“宵”,所以称正月十五为元宵节,元宵节又称为“上元节”。()
小学生的学习适应问题有哪些?
Perhapstherearefar(31)wivesthanIimaginewhotakeitfor(32)thathouseworkisneithersatisfyingnorevenimportantonc
最新回复
(
0
)