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
2024-08-11
24
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/3714805.html
相关试题推荐
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
随机试题
Theyoungsoldierwas______woundedinthewaranddiedafewdayslater.A、gradu
[originaltext]NewYork,USAThousandsof"OccupyWallStreet"demonstratorsfan
[originaltext]M:Yousaidthatpeopleusethewordiconcarelessly.Doyoucons
StressManagement1.DefinitionofstressResponseofthebodyto【T1】sti
Singaporeisoneoftheworld’ssmallestcountriesbutitisalsooneofth
电缆接头的两侧绝缘垫间的耐压值,不得低于电缆保护层绝缘水平的。A.1.2倍 B
隧道风压是隧道通风的基本控制参量,在长大隧道中,通风系统往往由复杂的通风网络构成
水文测验的工作内容包括()。A:水位、流速、泥沙、水下地形冲淤变化、蒸发、水温
甲是某期货公司的客户,丙是甲的债权人。如丙起诉甲,要求实现债权,下列关于申请人民
男性,72岁。慢性咳嗽、咳痰30余年,近10年来气急进行性加重,不能到户外活动。
最新回复
(
0
)