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
The United Nations says the world’s population will increase by 34 percent by the year 2050. Scientists and others know it will
The United Nations says the world’s population will increase by 34 percent by the year 2050. Scientists and others know it will
admin
2017-02-24
61
问题
The United Nations says the world’s population will increase by 34 percent by the year 2050. Scientists and others know it will be difficult to meet the food needs of so many people. A recent study shows that soybean crops and computers may help deal with the problem.
The U.N. predicts food production must increase by 70 percent to meet the needs of a richer population. The U.N. expects more people will live in cities than in rural areas. But today there is lit tie too low increase in the productivity of major crops. Kenneth Quinn is the president of the World Food Prize Foundation. He says the need to increase food production is the greatest difficulty humanity has ever faced, "There’ s going to be another 2 billion people on our planet between now and 2050 and how are we going to produce enough food for them to eat?" asked Quinn.
Darren Drewry is a scientist at the American Space Agency, NASA. He led a study of soybeans which NASA calls the world’ s most important protein crop. He says researchers using a computer were surprised to find that they were able to create a soybean plant that can be both more productive and use less water. "We find that there are changes to the architecture of modern soybean cultivars can be made to help us improve on many of these goals," said Drewry. Researchers were able to increase soybean productivity by 7 percent without using more water. The computer helped researchers do work that would have taken many years in the field. The next step is to test the computer ’s design.
We spoke to Stephen Long about that. He is a professor at the University of Illinois, and one of the writers of the report on the soybean study. He told us by Skype that researchers used computer program to study what would happen if they changed the way the plant grows. "One of the things the modelling predicted is that there’s too much leaf area so we’re actually removing leaves as the plant’s growing to get a lower leaf area. We’re also artificially modifying the angle of the leaves as well to reflect what the model predicted," said Long. Professor Long says it is important to find solutions to the predicted global food shortage before it happens. He says it will be 20 years before farmers can begin growing a more productive soybean once they have developed it.
The study on soybeans was published in the journal Global Change Biology. The National Science Foundation, NASA and the Bill & Melinda Gates Foundation paid for the study.
According to Kenneth Quinn what’s the greatest difficulty humanity has ever faced?
选项
A、To control the large population.
B、To avoid natural disasters.
C、To make more food production.
D、To urge more people live in the rural areas.
答案
C
解析
细节题。定位到文中He says the need to increase food production is the greatest difficulty humanity has ever faced可知最难的是如何增加农业产量。因此,正确答案是C。
转载请注明原文地址:https://kaotiyun.com/show/bhU7777K
0
大学英语六级
相关试题推荐
Since2007,theAmericanPsychologicalAssociation(APA)hasconductedasurveyofdifferentaspectsofstressinAmerica.Thisye
Since2007,theAmericanPsychologicalAssociation(APA)hasconductedasurveyofdifferentaspectsofstressinAmerica.Thisye
A、DoparentslikeMySpace?B、IsMySpacegoodorbad?C、MySpaceisthehomeofchildren.D、MySpaceisthebankofchildren’sinfo
Forthispart,youareallowed30minutestowriteanessayonunderstandingothersbyreferringtoAbrahamLincoln’sremark,"I
Itiscommonlyheldthatdrinkingmoderateamountsofalcoholcanreducetheoddsofhavingadeadlyheartattack.More【B1】_____
A、Openstoresinbusyareasofcities.B、Createspeciallanguage.C、Provideacomfortableenvironment.D、Sellavarietyofprodu
A、Itrequirestoomuchtravelingtodifferentcities.B、Itlimitsinteractionamongstudents.C、Itwillincreaseclasssize.D、I
JustlikeChinese,Westernersgivegiftsonmanyoccasions,suchas,onbirthdaysoffamilymembers,atweddings,atChristmasa
JustlikeChinese,Westernersgivegiftsonmanyoccasions,suchas,onbirthdaysoffamilymembers,atweddings,atChristmasa
JuanLouis,ajuniorgeologymajor,decidedtogivean【B1】______speechabouthowearthquakesoccur.Fromhisaudienceandanalys
随机试题
可直接抑制牙菌斑的方法有
患者脘腹痞闷,嘈杂,饥不欲食,恶心嗳气,口燥咽干,大便秘结,舌红少苔,脉细数。其治法是()
患儿,出生10天,考虑为新生儿胆红素脑病,新生儿胆红素脑病早期的主要临床特征是
工程勘察报告《地震》中应包括:按照地震规范划分场地土和建筑场地类别,场地中对抗震有利、不利和危险地段。根据地震烈度,判定()在地震作用下的液化势。
桥梁上部结构采用现浇法施工的有()。
项目生产安全事故应急预案应由()编制并组织演练。
厚厚的积雪可以使非同寻常的恶劣天气持续下去。如果一场严重的冬季暴风雪覆盖了大平原地区,那么积雪将太阳光的辐射反射回空中从而保持地而低温。由此,从加拿大南下的冷空气可以保持足够冷的温度从而引发更多的暴风雪。从上述信息中能适当地得出下列哪一结论?(
Sevenyearsago,agroupoffemalescientistsattheMassachusettsInstituteofTechnologyproducedapieceofresearchwhichsh
WilliamShakespearedescribedoldageas"secondchildishness"—noteeth,noeyes,notaste.Inthecaseoftastehemay,musicall
A、Companionship.B、Beingabletotalk.C、Quickresponse.D、Havingasenseofhumor.A
最新回复
(
0
)