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
54
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
(1)Likemanyhistoricalfilms,Amadeusisfarfromafaithfulaccountofwhatisknownabouttheperiodandthepeoplethat
TheCloningTechnologyI.Thedifferencebetweena【T1】________colonyandcloningamammalA.Clarifytheillusion:scientis
HotSpotsinCrossCulturalCommunicationI.【T1】________Conversations—Modesofaddress—【T2】______—Levels
Ifyouputwateronthestoveandheatitup,itwillatfirstjustgethotterandhotter.Youmaythenconcludethatheatingw
Manyofthemostflexibleexamplesoftooluseinanimalscomefromprimates(theorderthatincludeshumans,apes,andmonkeys).
Afghanistan’sTalibanfactionshaveagreedtofreeIranianprisonersinexchangefor______.
Everyproductonthemarkethasavarietyofcostsbuiltintoitbeforeitiseverputupforsaletoacustomer.Therearecost
Ofthesixouterplanets,Mars,commonlycalledtheRedPlanet,istheclosesttoEarth.Mars,4,200milesindiameterand55%o
Ofthesixouterplanets,Mars,commonlycalledtheRedPlanet,istheclosesttoEarth.Mars,4,200milesindiameterand55%o
随机试题
开关的交流合闸线圈通入同样数值的直流电压时,线圈会烧坏。()
女,35岁,身高160cm,体重75kg。体检:血压150/90mmHg,两下腹壁及大腿内侧有纵行红色纹。垂体MRI发现微腺瘤,此患者的治疗以下列哪项为好
关于心房利钠肽的作用,下列哪项是正确的
某男,32岁。咳喘近年余,胸闷痰多,白滑易出,舌苔白腻,脉滑。辨证为
糖皮质激素用于严重细菌感染的主要目的是A.加强抗生素的抗菌作用B.提高机体的抗病力C.直接对抗内毒素D.抗炎,提高机体对细菌内毒素的耐受力,制止危重症状发展E.使中性粒细胞数增多并促进其游走和吞噬功能
小血管损伤后,生理止血过程包括()
下列选项中,不适用于我国《著作权法》的是()。
晕轮效应亦称光环效应。是指利用一种一致的突出的特殊特性作为评价一个人的其他方面特性根据的一种倾向。根据上面的定义,下列哪一个人对他人的评价表现出了典型的晕轮效应?
古罗马从没有在一场______的战役被击溃过,它的衰败乃亡于“内”和“耗”:内部人的纷争、______、阴谋、极度靡费、嗜血夺权,耗了四百年,终于把偌大帝国给耗尽了。填入横线部分最恰当的一项是()。
利用“我的电脑”窗口,将C盘根文件夹下的“NewFiles”文件夹中的“网页文件.htm”文件重命名为“IntemetABX网页.htm”,将“图像文件.psd”改为“Photoshop图像.psd”(请按题目中的顺序操作)
最新回复
(
0
)