首页
登录
职称英语
With rapid growth of world population, mainly in developing countries, the a
With rapid growth of world population, mainly in developing countries, the a
游客
2024-05-20
26
管理
问题
With rapid growth of world population, mainly in developing countries, the available cultivable land per person has declined steadily since 1960 and will decease by half over the next 50 years. Besides, about 400 million women of childbearing age are iron deficient, leaving their babies exposed to various birth defects. As many as 100 million children suffer from vitamin A deficiency. Tens of millions of people Suffer from other major ailments (疾病) and nutritional deficiencies caused by lack of food.
How can biotech help? Biotechnologists have developed genetically modified rice that is fortified with beta-carotene (β胡萝卜素) and additional iron, and they are working on other kinds of nutritionally improved crops. Biotech can also improve farming productivity in places where crop failures are caused by pests, drought, poor soil and crop viruses or bacteria. Genetically modified, virus-resistant crops can reduce that damage, as can drought-tolerant seeds in regions where water shortages limit the amount of land under cultivation. Biotech can also help solve the problem of soil that contains excess aluminum, which damages roots and causes crop failures.
Many scientists believe biotech could raise overall crop productivity in developing countries as much as 25% and help prevent the loss of those crops after they are harvested. Yet for all that promise, biotech is far from being the whole answer. In developing countries, lost crops are only one cause of hunger. Poverty plays the largest role. Making genetically modified crops available will not reduce hunger if farmers cannot afford to grow them or if the local population cannot afford to buy the food those farmers produce.
Nor can biotech overcome the challenge of distributing food in developing countries. Taken as a whole, the world produces enough food to feed everyone—but much of it is in the wrong place. Especially in countries with undeveloped transport infrastructures, geography restricts food availability as dramatically as genetics promises to improve it.
Biotech has its own "distribution" problems. Private-sector biotech companies in rich countries carry out much of the leading-edge research. Their products are often too costly for poor farmers in the developing world, and many of those products won’t even reach the regions where they are most needed. Biotech firms have a strong financial incentive to target rich markets first to help them rapidly recoup (收回) the high costs of product development. But some companies are responding to the needs. [br] What can we learn from the last paragraph?
选项
A、Biotech is powerful in tackling world poverty and hunger.
B、The impact of genetic research on food production is limited.
C、More collaboration is needed to deliver farmers biotech solutions.
D、Fears that biotech might be harmful to man are unfounded.
答案
C
解析
综合判断题。文章末段指出,生物科技自身面临着“分配”问题。许多尖端研究都是由富国的私营生物科技公司进行的。但这些新产品由于过于昂贵而无法交到贫穷农民的手中,所以人们应该加强合作,让农民能从生物科技成果中获利。
转载请注明原文地址:https://tihaiku.com/zcyy/3603515.html
相关试题推荐
Reducingpopulationgrowthimproveboth______ofpeopleandtheenvironment.A、h
The______ofrainforestsmayhamperadevelopingcountryinitsfightagainstp
Itis______inWesterncountriestogivepeoplegiftsontheirbirthdays.A、cohe
ThepopulationinHongKongis______Chinese.A、popularlyB、predominantlyC、comm
Aftertheelectionthenewgovernment,________developingtheroads.A、initiated
Anincreasingproportionofourpopulation,unabletolivewithoutadvancedmedi
[originaltext]Therearetwobasicwaystoseegrowth:oneasaproduct,the
[originaltext]Therearetwobasicwaystoseegrowth:oneasaproduct,the
[originaltext]Amongwesternrichcountries,peopleintheUnitedStateswor
[originaltext]Amongwesternrichcountries,peopleintheUnitedStateswor
随机试题
Comparativelythetelephonechargesarelowerifyoumakeacall______.[br]Wh
下列哪项例证了内部控制的固有局限性?()A.会计主管同时操作和记录现金存款
所检验的水泥凡细度、初凝时间、不溶物和烧失量任一项不符合标准规定,均判为不合格品
下列不属于基金客户服务特点的是()。A.持续性 B.规范性 C.永久
股票具有()等特征。 ①收益性 ②风险性 ③流动性 ④永久性?A:①②
异丙肾上腺素在临床常用于治疗哮喘,治疗过程中给患者带来最多的副作用是A:心动过速
基础心理学是研究()。 (A)正常成人心理现象的心理学基础学科 (B
(二) 中国邮政面对电子商务的蓬勃发展以及信息技术挑战,启动了电子邮件工程,邮
代理付款行接到收款人或持票人交来的银行本票和进账单,按规定审查无误后办理兑付,会
有四个互斥方案,寿命期均为10年,基准收益率为8%,(P/A,8%,10)
最新回复
(
0
)