首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Crop Problem Advances in technology have helped more of the world’s population live better and longer, and that is part of o
Crop Problem Advances in technology have helped more of the world’s population live better and longer, and that is part of o
admin
2011-01-05
78
问题
Crop Problem
Advances in technology have helped more of the world’s population live better and longer, and that is part of our problems Better health standards have kept larger number of people alive. The world’s population is now almost four billion and expected to double in 25 years. Growing population and slowly rising living standards have increased our need for food at the rate of 30 million tons per year. As a result, the world’s stockpile of food(食物储备) is declining by about 10 million tons per year.
From the early 1950s until 1972 , world food production increased greatly. The Green Revolution (绿色革命) extended scientific techniques to agriculture in the form of hybrid seed (杂交种)and poultry (禽类), chemical fertilizers (化学肥料) and pesticides (杀虫剂), and complex irrigation systems. Strains (品种) of corn (玉米), sorghum (高粱), soybeans (大豆), wheat and rice were developed to flourish under particular climate and soil conditions.
In the United States, corn production rose to 110 bushels(蒲式耳:谷物、水果、蔬菜等容量单位,在英国相当于36, 368升,在美国相当于35, 238升) per acre from only 26 bushels per acre in the early 1900s. Milk production rose to 10, 000 pounds per cow per year, compared with 600 in India. Chickens were bred to eat less, grow to maturity in shorter time, and produce more eggs. As a result of such scientific advances, our twelve midwestern states alone now feed one fourth of the world’s people.
Crop disaster in 1972 brought an apparent end to the growth in production. Much of the extra yields had come from the use of chemical fertilizers, primarily petroleum based and now in short supply. The drop in world supplies of petroleum-based fertilizers is expected to cause a drop in crop yields of ten tons for each one ton decline in fertilizers applied.
This presents a particular problem for underdeveloped nations that often lack the foreign exchange necessary for buying fertilizer. The problem is so severe that Philip Handier, president of the National Academy of Sciences, has predicted one million child deaths per month in these nations by the year 2025.
Given the present growth rate of the world’s population and our ability to produce food______.
选项
A、the United States will be able to feed half the world by 2025
B、the future will see no more hunger
C、we will encounter very serious problem in the near future
D、the developed nations will change in the near future
答案
C
解析
本题考查考生根据篇章的判断分析能力。考的是如果世界人口以目前的水平增长,我们的生产能力也保持现有水平,将会怎么样。从文章最后一段最后一句:The problem is so severe that Philip Handler,president,of the National Academy of Sciences,has predicted one million child deaths per month in these nations by the year2025. 我们可以得知,产量的问题已经非常严峻了,国家科学院院长Philip Handle预测,到2025年,在不发达国家里,每个月将有100万儿童死于饥饿。由此我们可以得知,如果世界人口以目前水平增长,而我们的生产能力保持现有水平,那么,我们将面临严重的粮食危机。所以,正确答案是C。
转载请注明原文地址:https://kaotiyun.com/show/fbQd777K
本试题收录于:
职称英语理工类C级题库职称英语分类
0
职称英语理工类C级
职称英语
相关试题推荐
Whatdomedicalresearchersusuallyusetomakeplacebopills?Placebosmaybeharmful,becausetheymaybeusedby______.
MusicUsedAsaHealingTherapy1.Musichaslongbeenusedtotreatpatientssufferingfromdifferentproblems.In400BC,
ProlongingHumanLifeProlonginghumanlifehasincreasedthesizeofthehumanpopulation.Manypeoplealivetodaywouldha
ProlongingHumanLifeProlonginghumanlifehasincreasedthesizeofthehumanpopulation.Manypeoplealivetodaywouldha
ProlongingHumanLifeProlonginghumanlifehasincreasedthesizeofthehumanpopulation.Manypeoplealivetodaywouldha
ProlongingHumanLifeProlonginghumanlifehasincreasedthesizeofthehumanpopulation.Manypeoplealivetodaywouldha
LudwigVanBeethovenLudwigVanBeethoven,amajorcomposerofthenineteenthcentury,overcamemanypersonalproblemstoac
LudwigVanBeethovenLudwigVanBeethoven,amajorcomposerofthenineteenthcentury,overcamemanypersonalproblemstoac
CoveringtheCostAllbyHimselfUniversitylifeisinnowaycheapinCanada.ItcostsPeterKemp,acomputersciencemajor
Thestudyalsonotesasteadydeclineinthenumberofcollegestudentstakingsciencecourses.
随机试题
已知矩阵的一个特征值为1,求数a,并求正交矩阵Q和对角矩阵∧,使得Q-1∧Q=A.
MHC分子参与下列哪种细胞的分化过程
关于剂型的正确使用A、泡腾片剂B、舌下片C、咀嚼片D、含漱剂E、滴丸一般宜用100~150ml凉开水或温水浸泡,待完全溶解或气泡消失后再饮用的是
某国家重点工程的地下变电站装有3台大型油浸变压器,设置了水喷雾灭火系统。系统安装初调完毕后进行实喷试验时,所有离心雾化喷头始终只能喷出水珠,均不能成雾。现场用仪器测得水雾喷头入口处压力为0.36MPa,并拆下全部离心雾化型喷头与设计图纸、喷头样本和产品相关
商品流通企业的战略分析包括外部宏观环境分析,行业竞争环境分析和内部环境分析。其中,外部宏观环境分析的内容包括()。
已开具的发票,税务机关有权调出查验;空白发票,税务机关无权调出查验。()
某股份有限公司系一家需要编制季度财务会计报告的上市公司。下列会计报表中,不需要该公司在其20X1年第3季度财务会计报告中披露的是( )。
反馈控制是根据对系统未来的预测,事先采取措施应付即将发生的情况。()
面对斯大林的错误,高尔基抗争过:1929年,在斯大林的高压下,苏联文学界错误地讨伐著名作家皮里尼亚克,高尔基撰文公开();当苏共中央要求高尔基为斯大林立传时,高尔基断然拒绝;当季诺维也夫、加米涅夫被诬陷,斯大林要他写文章谴责他们搞个人恐怖时,高尔基
我国环境保护的政策原则是()
最新回复
(
0
)