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
2024-08-09
49
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] 【M7】
选项
答案
by→for
解析
该句的意思是“例如,在非洲,在一项试验中,改良种子、更多化肥和先进的种植方法使玉米和小麦产量增加了一倍以上”。for instance为固定用法,表示“例如”。因此将by改为for。
转载请注明原文地址:https://tihaiku.com/zcyy/3711931.html
相关试题推荐
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
ThomasMalthuspublishedhisEssayonthePrincipleofPopulationalmost200
TheNaziregimeis______ofallthemeandprincipleexceptappetiteandracialdo
TheNaziregimeis______ofallthemeandprincipleexceptappetiteandracialdo
TheNaziregimeis______ofallthemeandprincipleexceptappetiteandracialdo
TheDeclarationofIndependencewaswrittenby______.A、ThomasJeffersonB、George
ThomasAlvaEdisonwasthemostfamousofallAmericaninventorsand______electr
随机试题
Areyoualwayssureyouknowwhatpeoplemeanwhentheytrytodescribethei
[originaltext]W:Goodmorning,Sam.M:Goodmorning,Mary.Howareyou?W:Well
Thetwosisterslookverymuch______.A、alikeB、likeC、likelyD、likewiseA姐妹俩长得非
Whatdemostpeopledowhentheyhaveimportanttasksandurgentrequestsatthe
Paststudieshavesuggestedtheamygdale(扁桃体)isimportantin(26)______respon
为什么黄芩的炮制切片最好是用热蒸软化法?
水泥混凝土抗折强度是以标准尺寸的梁型试件,在标准养护条件下达到规定龄期后,采用(
油浸式变压器顶层油温在额定电压下的一般限值:强迫油循环风冷(OFAF)变压器顶层
下列市场细分变量中,不属于心理变量的有()A.个性 B.购买动机 C
(2015年真题)依据《生产安全事故报告和调查处理条例》的规定,下列情形中,应向
最新回复
(
0
)