首页
登录
职称英语
Thomas Malthus published his Essay on the Principle of Populationalmost 200
Thomas Malthus published his Essay on the Principle of Populationalmost 200
游客
2023-10-16
65
管理
问题
Thomas Malthus published his Essay on the Principle of Population
almost 200 years ago. Ever since then, forecasters have being warning 【M1】______
that worldwide famine was just around the next corner. The fast-growing
population’s demand for food, they warned, would soon exceed their 【M2】______
supply, leading to widespread food shortages and starvation.
But in reality, the world’ s total grain harvest has risen steadily over the
years. Except for relative isolated trouble spots like present-day Somalia, 【M3】______
and occasional years of good harvests, the world’ s food crisis has remained 【M4】______
just around the corner. Most experts believe this can continue even as if 【M5】______
the population doubles by the mid-21st century, although feeding 10 billion
people will not be easy for politics, economic and environmental reasons. 【M6】______
Optimists point to concrete examples of continued improvements in yield.
In Africa, by instance, improved seeds, more fertilizers and advanced 【M7】______
growing practices have more than double corn and wheat yields in an 【M8】______
experiment. Elsewhere, rice experts in the Philippines are producing
a plant with few stems and more seeds. There is no guarantee that plant 【M9】______
breeders can continue to develop new, higher-yielding crop, but most 【M10】______
researchers see their success to date as reason for hope. [br] 【M1】
选项
答案
being改为been
解析
(have been+现在分词为现在完成进行时。)
转载请注明原文地址:https://tihaiku.com/zcyy/3101818.html
相关试题推荐
Arecentstudy,publishedinlastweek’sJournaloftheAmericanMedicalAss
Arecentstudy,publishedinlastweek’sJournaloftheAmericanMedicalAss
Arecentstudy,publishedinlastweek’sJournaloftheAmericanMedicalAss
WherewouldThomasprobablygo?[br][originaltext]W:Goodafternoon.Today,we
WherewouldThomasprobablygo?[br][originaltext]W:Goodafternoon.Today,we
ThemagazinepublishedbyyourEnglishClubhasbeenencouragingreaderstoexch
______belongsto"streamofconsciousness"school.A、VirginiaWoolfB、ThomasWolf
WhydidJanephoneMatt?[br][originaltext]M:Hello.MattThomasspeaking.W:
WhydidJanephoneMatt?[br][originaltext]M:Hello.MattThomasspeaking.W:
WhydidJanephoneMatt?[br][originaltext]M:Hello.MattThomasspeaking.W:
随机试题
Haveyougotanyideaforthesummervacation?Idon’tmindwherewego____
读书的习惯是人类获得知识的最重要的方法之一;而我们在阅读属于自己的书籍时所得到的乐趣,远远胜于阅读借来的书时所得到的乐趣。所以,每一个人都应该在青年时期就开始搜
A.functionB.warningC.definitionD.replacingE.expressF.wordsG.
A.markingB.sinceC.nuisanceD.arriveE.profoundF.signsG.explos
【B1】[br]【B11】A、whichB、whereC、whenD、whyB此处需要的是引导词来引导宾语从句,从句意上看,应选where,相当于t
A.头孢拉定 B.头孢他啶 C.头孢克洛 D.头孢氨苄 E.双氯西林
冲击地压能够引发多种矿井灾害,尤其是瓦斯、煤尘爆炸以及火灾、水灾、干扰通风系统等
制作的多媒体课件能够稍加改造就可以为其他教师所用,这体现了多媒体课件设计的()
供计算机使用的不停电电源装置,其容量的选择应留有裕度。
以下证券中风险通常比政府债券高的金融工具有()。A.银行定期存款 B.期货
最新回复
(
0
)