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
2023-10-15
6
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/3100189.html
相关试题推荐
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
随机试题
Makingchoicesishard.ThatwouldbewhyresearcherMoranCerfhaseliminate
Weconsidered______toCaliforniaatfirst,butdecidednottointheend.A、move
在麦康凯和SS平板上生长的大肠杆菌菌落为A.黑色菌落 B.粉红色菌落 C.乳
患者,女,40岁。发现颈部肿块2天,查体:气管右侧可扪及一结节,质硬,表面不光滑
拜占庭建筑艺术主要继承的是()。A.洛可可风格 B.罗马风格 C.古
发行人在其公告的证券发行文件中隐瞒重要事实或者编造重大虚假内容的情况中,以下相关
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
接有电容滤波器的桥式整流电路如图所示。已知u(f)=35.4sin314tV,直
关于急性胰腺炎低钙血症的叙述,错误的是( )。A.与降钙素分泌过多有关 B.
下列哪一项不属于资本市场的特点?()A.流动性强 B.收益较高
最新回复
(
0
)