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 produc
Let us consider what science and technology have to contribute to the food problem. The simplest way to increase food produc
admin
2013-06-17
81
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
【S9】
选项
答案
H
解析
根据并列关系 resistant to change in their methods of cultivation,可是他们很保守。
转载请注明原文地址:https://kaotiyun.com/show/2Q07777K
0
大学英语四级
相关试题推荐
A、aheavybox.B、asmalldog.C、herhandbag.D、adrink.A此题考查根据内容推测的能力。解题关键在于听到第一句“hey,youlooklikelyyouneedahand.Itlooks
QuickChangeinStrategyforaBooksellerInthemovieYou’veGotMail,TomHanksplayedtheaggressivebig-boxretailerJo
Modernmass-productionmethodslowerthecostofmakinggoods,andthusgiveusbettervalues.Atthesametime,Americaningenu
Itiseasiertonegotiateinitialsalaryrequirement.Becauseonceyouareinside,the【S1】______constraintsinfluencewageincre
A、ThewomanismailingthemtoGary’soldaddress.B、Thepostofficeissendingthemtothewoman’shouse.C、Theyarebeingheld
Forthispart,youareallowed30minutestowriteashortessayentitledEducationPaysbasedonthestatisticsprovidedinthe
Organicfarmershadfoughttopreventgenetically-engineeredcropsfrombeing【C1】______organic,anditcould【C2】______forthem.
A、Thatthemanrethinktheirplans.B、Thatthemanseeafamilydoctor.C、Thatthemanseeapsychiatrist.D、Thatthemanconcen
A、IfPhilislucky,hemightgetascholarship.B、ThereisnowayinwhichPhilcanwinascholarship.C、Philisnotgoingtoch
A、Peoplecaneasilygetscholarship.B、Peoplecanknowthenewsoncampus.C、Peoplecanmakeclosefriends.D、Peoplecanshareo
随机试题
通常的八法不包括
下列公式用以表示均数抽样误差的是
苯丙酮尿症的遗传方式是
生产工艺过程中产生的物理性有害因素不包括
患者以胃脘痞塞,满闷不舒为主,按之柔软,压之不痛,望无胀形。发病缓慢,时轻时重,反复发作,病程漫长。多因饮食、情志、起居、寒温等因素诱发。其诊断是()
竞争力对比分析包括()。
简支梁桥有()。
(2008年)2007年8月8日,甲、乙、丙、丁共同出资设立了一家有限责任公司(下称公司)。公司未设董事会,仅设丙为执行董事。2008年6月8日,甲与戊订立合同,约定将其所持有的全部股权以20万元的价格转让给戊。甲于同日分别向乙、丙、丁发出拟转让股权给戊的
物体距凸透镜20cm时,可在光屏上得到一个缩小的实像,若把物体向透镜方向移8cm,又可在光屏上得到一个放大的实像,则透镜的焦距可能是()。
Indiansaregenerallyreligiousandfamilyoriented,andtheirlivesaredeeply【C1】______intradition.Theinterestsofthefami
最新回复
(
0
)