首页
登录
职称英语
Thomas Malthus published his Essay on the Principle of Populationalmost 200 yea
Thomas Malthus published his Essay on the Principle of Populationalmost 200 yea
游客
2024-08-09
55
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 comer.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 poor harvests, the world’s food crisis has remained【M4】_________
just around the comer.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 com 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] 【M8】
选项
答案
double→doubled
解析
此处为现在完成时have doubled的结构。因此将double改为doubled。
转载请注明原文地址:http://tihaiku.com/zcyy/3712211.html
相关试题推荐
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200yea
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200yea
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200yea
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200yea
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200yea
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
随机试题
PreparingChildrentoBeSafeatCollege[A]Moneycanb
TheUnitedStatesiswell-knownforitsnetworkofmajorhighwaysdesigned
A县国税局派出本局稽查人员王某和孙某于2010年10月8日给本县某食
某患者双眼睑下垂1年余,诊断为重症肌无力。胸部CT发现前上纵隔占位,最可能的诊断
下列选项中,属于强调学生探究性学习方式的是()。A.基于问题式学习 B.接
病理改变在肾、临床表现在膀胱,最常见于泌尿系统什么病 A.肾癌B.肾结石
甲将自己的一套住宅出售予乙,并约定乙先支付房款的30%,一个月内付清剩余房款,待
2021年4月,税务机关对某房地产开发公司开发的房产项目进行土地增值税清算
(2017年真题)随着经济全球化和金融自由化的深入,商业银行的营销越来越注意(
某公司正在论证新建一条生产线项目的可行性。经测算,项目的经济寿命为5年,项目固定
最新回复
(
0
)