首页
登录
职称英语
"If we don’t achieve some major step changes in crop yields by 2050," says D
"If we don’t achieve some major step changes in crop yields by 2050," says D
游客
2024-02-25
38
管理
问题
"If we don’t achieve some major step changes in crop yields by 2050," says Dr. James Hartwell, "there will be a major shortfall in available food to feed the world’s population." It’s a serious problem to which Hartwell and a team at Liverpool University may help fend part of a solution. They are investigating the unusual properties of a Madagascan plant, the Kalanchoe fedtschenkoi. Unlike other plants it captures its carbon dioxide at night and is ten times more water-efficient than crops such as maize, which means it is highly suitable for desert area. Making desert lands more amenable to crops will be increasingly important over the coming decades.
Hartwell has been fascinated by desert plants since he was an undergraduate, and his interest carried through to his doctorate and a research Fellowship, What Liverpool University has added to the research is sophisticated DNA sequencing technology. "We tapped into that," says Hartwell, "and realised it was perfect for going into our desert plants and starting to understand what genes they are using to survive desert conditions and, in particular, to perform this nocturnal(夜间发生的) CO2 fixation that they do. "
This aspect of the plant is taking on major significance. "The Intergovernmental Panel on Climate Change has predicted that in the next 50 years, already droughty regions will become droughtier," explains Hartwell, "and if they will expand, there will be increasing desertification."
There are two possible directions in which the results of this research may be used. They are not actually producing a desert plant but their high level research may lead to that. They may be able to deploy (展开,移植)the knowledge and, potentially, some of the genes into food crops such as wheat and soy beans. Though, as Hartwell points out, it relies on Genetically Modified food becoming widely accepted.
The other route is that these plants could be grown for biomass (大面积高密度的)that could feed into biofuel production. "If this is viable we could perhaps provide, certainly a percentage, of the world’s biofuel needs through using marginal land, and growing desert plants that are very happy to grow there. " With questions being asked about the impact of current biofuel production, as well as food production and prices, the research at Liverpool can create real possibilities for adapting land usage in a time of climate change. [br] According to the passage, the first possible directions mainly depend on ______.
选项
A、whether it really produce a desert, plant or not
B、the level of the research
C、food crops such as wheat and soy beans
D、people’s reorganization of the food with gene technology
答案
D
解析
题干问的是决定因素,联系关键词至本段末句,...it relies on Genetically Modified food becoming widely accepted,其中relies on为题干depending on的同义转述,据此推测主要取决于人们对转基因食物的认可与否,故D为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3482644.html
相关试题推荐
OneofthemostexcitingchangesineducationintheUnitedStatestodayis
OneofthemostexcitingchangesineducationintheUnitedStatestodayis
OneofthemostexcitingchangesineducationintheUnitedStatestodayis
Socialchangesmadeadifference:Peopleusedto____________(从父母或祖父母那里寻求意见),now
Thegreatestrecentsocialchangeshavebeeninthelivesofwomen.Duringt
Thegreatestrecentsocialchangeshavebeeninthelivesofwomen.Duringt
Thegreatestrecentsocialchangeshavebeeninthelivesofwomen.Duringt
Thelecture______(今天下午要上的)willincludetheradicalchangesbroughtaboutbythe
Iamveryproudof______(我们国家这20年来所取行的成就).whatourcountryhasachievedinthes
Thegreatestrecentsocialchangeshavebeeninthelivesofwomen.Duringt
随机试题
Water,whenboiled,always______steam.A、givesoutB、givesupC、givesoffD、giv
Therightcombinationofbricks,mortarandplastercanbemixedtobuilda
系统规划的主要任务包括()。A.明确组织的信息需求,制定系统总体结构方案 B
在讲授“信息技术对人类社会的影响”一课时,蒋老师准备将全班同学分成“教育文化”组
患者,女,28岁,诊断为急性淋巴细胞白血病,化疗后完全缓解。缓解期出现头痛、恶心
( )是通过发行股票或置换所有权筹集的资本。A.债权资本 B.股权资本 C
A.细辛 B.花椒 C.丁香 D.小茴香 E.高良姜具有散寒止痛、理气和
甲国某公司向乙国难民运输一批粮食。运输粮食的货轮在经过丁国领海时,触发了该水域的
下列有关公司资本成本用途的表述,正确的是()。A.投资决策的核心问题是决定
关于优先股的说法,正确的是( )。A.优先股有还本期限 B.优先股股息不固定
最新回复
(
0
)