首页
登录
职称英语
The United Nations says the world’s population will increase by 34 percent b
The United Nations says the world’s population will increase by 34 percent b
游客
2023-08-24
70
管理
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 little 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. [br] What special qualities will the new soybean plant have?
选项
A、It can be more productive yet require less water.
B、It will be taller and stronger.
C、It will have less leaves and more productivity.
D、It will require less water and fertilizer.
答案
A
解析
推断题。根据文中a soybean plant that can be both more productive and use less water可以推断出新品种的特性是产量高,需水少,因此,正确答案是A。
转载请注明原文地址:http://tihaiku.com/zcyy/2952416.html
相关试题推荐
Caughtinasqueezebetweenthehealthneedsofagingpopulationsononehan
Caughtinasqueezebetweenthehealthneedsofagingpopulationsononehan
Caughtinasqueezebetweenthehealthneedsofagingpopulationsononehan
Populationgrowthwillmeanover100millionmorepeopleintheUnitedState
Populationgrowthwillmeanover100millionmorepeopleintheUnitedState
Populationgrowthwillmeanover100millionmorepeopleintheUnitedState
NewYorkisthemostpopulous(人口多的)cityintheUnitedStates,inametropoli
NewYorkisthemostpopulous(人口多的)cityintheUnitedStates,inametropoli
NewYorkisthemostpopulous(人口多的)cityintheUnitedStates,inametropoli
NewYorkisthemostpopulous(人口多的)cityintheUnitedStates,inametropoli
随机试题
Generallyspeaking,threetypesofproblemsareinvolvedin【T1】______.They
在组织一系统水平,去脂组织中所占比例最大的部分是( )。A.以上都不是 B.
文化部关于印发《文化市场突发事件应急管理办法(试行)》及《文化市场突发事件应急预
人体内的元素除碳、氢、氧、氮以有机的形式存在外,其余的统称为矿物质。矿物质又分常
一般不用于临床血清氯测定的方法是A.火焰光度法 B.离子选择电极法 C.滴定
关于ANA说法错误的是A.ANA在为治疗的SLE患者中的效价较高B.大多数自身免
近年来每逢传统节日、西方节日,抑或是“双11、双12”等人造节日,都成为互联网商
女性,64岁,曾被诊断为“轻型”糖尿病,用饮食管理即能控制血糖在“正常范围”,近
关于公司资本结构的说法,正确的有( )。A.公司的筹资方案影响资本结构 B.公
男性,自幼常发生黄疸,贫血检查证实为遗传性球形细胞增多症,治疗最好采用A、糖皮质
最新回复
(
0
)