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
In 1798 the political economist Malthus predicted that in time mankind would face starvation, having outgrown the available food
In 1798 the political economist Malthus predicted that in time mankind would face starvation, having outgrown the available food
admin
2013-02-16
37
问题
In 1798 the political economist Malthus predicted that in time mankind would face starvation, having outgrown the available food supplies. Today, a century and a half later, there are still experts who forecast the same global disaster unless urgent measures are taken to prevent it.
By the end of the present century there may well be over five thousand million people living on this globe, ail increase of over fifty per cent of today’s figure. In order to keep pace with this increase in mankind the farmers of the world would have to step up their production of food by at least two per cent every year. Such a rate of increase has never been maintained in any country by conventional methods of agriculture, despite modern mechanization and the widespread use of fertilizers. There are no large worthwhile reserves of potential farmland, remaining, and good fertile land is continually being diverted to industrial use. Moreover, erosion of the soil takes a constant toll.
Intensive research, carried out over many years in all manner of climatic conditions, has produced a revolutionary method of growing crops without using any soil at all. Hydroponics, as this technique is called, may well be the answer to all our food worries. Already it has accomplished wonders in producing huge crops. Hydroponics was once a complicated and expensive business; now it is well out of the experimental stage. Labor costs are far lower than when normal methods of agriculture are employed. In fact, it is a completely automatic system. There is no hard manual work, no digging or plowing, and no weeding to speak of. Yields can be far higher than they are in soil.
The phrase "having overgrown the available food supplies" in the first paragraph implies that______.
选项
A、the available food supplies will be enough to feed world population
B、the earth is too exhausted to support its increasing population
C、world population will grow at a rate faster than food production
D、food supplies will be too much available for world population
答案
C
解析
这句话在首段里没有解释,因此要在第二段找线索。第二段说人口增长很快,要满足食物供应,就不得不提高现今的食物生产速度,可知答案应为C选项。
转载请注明原文地址:https://kaotiyun.com/show/GK1O777K
0
考博英语
相关试题推荐
Althoughstudentsmaybeina______position,teachersshalltreatthemasequals.
Theinternetisgoodatshame.1)Therearecountlesswebsiteswherepeoplecanpostnastycomplaintsaboutex-loversandrudec
Americanstodaydon’tplaceaveryhighvalueonintellectOurheroesareathletes,entertainers,andentrepreneurs,notscholar
Americanstodaydon’tplaceaveryhighvalueonintellectOurheroesareathletes,entertainers,andentrepreneurs,notscholar
ThetraditionalAmericanThanksgivingDaycelebration【1】to1621.【2】thatyearaspecialleastwaspreparedinPlymouth,Massachus
ThetraditionalAmericanThanksgivingDaycelebration【1】to1621.【2】thatyearaspecialleastwaspreparedinPlymouth,Massachus
ItispossibleforstudentstoobtainadvanceddegreesinEnglishwhileknowinglittleornothingabouttraditionalscholarlyme
Quiteafewteacherscomplainaboutstudentsreadingfewerbooksthanbefore.Infact,studentsnowadaysspendmoretimesurfing
Thewordscienceisheardsooften,inmodemtimesthatalmosteverybodyhassomenotionofitsmeaning.Ontheotherhand,its
Againstthewishesofmanysmallercountries,Europeis______astable,ifundesirable,situationlackinganycoherentpolicyof
随机试题
______determinesagoodmealvariesfromcountrytocountry.
在风湿性疾病中,哪一种疾病较少累及肾脏
()可以从一个侧面反映国民经济运行情况和消费品的供求情况。
从国际劳工组织推荐的标准来看,一般认为人们每周从事谋求收入()个小时以上的劳动即为就业。
某外国投资者A于2009年3月1日以200万美元收购某国内B企业的部分资产,并以该部分资产作为出资与国内企业C公司于2009年4月1日成立了一家中外合资经营企业。以下表述,其中不符合法律规定的付款方式的有()。
________指人们对自己是否能够成功地进行某一成就行为的主观推测和判断。
4辆车运送货物,每辆车可运16次;7辆车运送,每辆车只能运10次。设增加的车辆数与运送减少的次数成正比,且每车次运送货物相等,运送货物总量最多是多少车次?()
YeatswasbeginningtouseavocabularyfreshlymintedfromthetreasuryofGaelicliterature,andmanyoftheshorterpoemsin
What’sthetopicofthetalk?
Genealogy,thestudyoffamilyhistory,isthesecondmostpopularhobbyinAmericatoday.MillionsofAmericans【C1】sp______the
最新回复
(
0
)