首页
登录
职称英语
[Gardener wanted.NASA requires a gardener to grow plants in a greenhouse
[Gardener wanted.NASA requires a gardener to grow plants in a greenhouse
游客
2024-08-14
6
管理
问题
[Gardener wanted.NASA requires a gardener to grow plants in a greenhouse.The successful applicant must be willing to travel long distances.The location is Mars.Transport will be provided.Please contact for further details and to arrange an interview.]
For the moment the position described above is an imaginary vacancy.It will probably be many more years before gardeners are needed on Mars.However, the actual growing of plants on Mars may be only a year away.Scientists are currently suggesting a mission that might put plants on Mars next year.
The idea is to use a small NASA spacecraft called a ’Mar Scout’ to send the plants in a miniature greenhouse.Landing on Mars it would scoop up some Martian soil.Enhance it with nutrients and then try to germinate and grow the seeds.The seeds would be bioengineered mustard plants, altered so that they would glow when they are struggling.Using bioengineering the mustard seed genes can be combined with jellyfish genes that make the plants glow with a soft green aura when they encounter problems.Healthy, thriving plants will not glow.When the scientists observe a plant is glowing, they can study it and learn what needs to be charged for plants to be able lo grow on Mars.
The aim of the experiment is to eventually be able to successfully grow plants in Martian greenhouses, and perhaps one day openly on Mars itself.What value does this have? After all, it would not be viable to farm food on Mars and then return it to Earth.
The meaning lies in being able to sustain life on Mars itself.It is far too expensive to transport all the supplies that would be needed by a Martian colony form Earth.So a crucial element for establishing a long-term human presence on Mars is a sustainable life support system.This is called ’ Bioregenerative’ , a renewable symbiotic relationship between plants, humans, and microbes.The humans produce the carbon dioxide and nutrients via their waste that the plants need, in turn they produce the oxygen and food that the humans need.The microbes make the process possible.Also, there is the social and symbolic value.When Earth life is actually growing on another planet that is likely to reignite interest in space travel: public interest and support for space travel is essential if governments are to be permitted to invest the huge sums of money required for such experimentation.
Questions 56—60 Complete the following schema with no more than three words for each blank according to the passage.
[br]
选项
答案
encounter problems
解析
根据题意定位至文章第二段。 原文倒数第三句提到“Using bioengineering the mustard seed genes can be combined with jellyfish genes that make the plants glow with a soft green aura when they encounter problems.”由此可知,当遇到问题时,水母基因可以使芥莱种子发出柔和的绿色光环,即实验的第二步是观察植物是否遇到问题,故本空填encounter problems。
转载请注明原文地址:https://tihaiku.com/zcyy/3719126.html
相关试题推荐
教育部要求,课外活动应作为学校生活的一部分。(require)TheMinistryofEducationrequiresthatextra—cur
Theuseofplantsforhealingisundoubtedlytheworld’soldestandmostcom
Theuseofplantsforhealingisundoubtedlytheworld’soldestandmostcom
[Gardenerwanted.NASArequiresagardenertogrowplantsinagreenhouse
[Gardenerwanted.NASArequiresagardenertogrowplantsinagreenhouse
Thesuccessrateinlung,heartorlivertransplantsisfarfromsatisfactory.肺、
Man,saidAristotle,isasocialanimal.Thissociabilityrequirespeacefulcongr
Recognizingtheenormouscontributionthatplantsmaketosuccessfulrem
Beforemodernscience,peopleusedplantsnotonlytocureallkindsofd
Beforemodernscience,peopleusedplantsnotonlytocureallkindsofd
随机试题
Manystudentsfindtheexperienceofattendinguniversitylecturestobear
一些发展中国家正致力于发展循环经济,大规模利用太阳能、风能等可再生清洁能源,普及发展生态交通、生态建筑和环保建材。Somedevelopingcountri
Mypassportisdueto______inthreemonths.A、terminateB、ceaseC、expireD、exce
[originaltext](1)Thepriceofgoldfelltoitslowestlevelinfiveyearsi
组织行为学的研究范围主要指()。A.人的一般行为规律 B.一切人类
炮制后可改变药性,扩大药物用途的是()。A.姜半夏B.制南星C.胆南星D.法半
对人体之气的生成说法错误的是A.来源包括禀受父母的先天之精气B.来源包括饮食物中
A.五行相侮 B.五行相乘 C.五行相克 D.五行相生 E.五行制化补肾
2020年9月X市甲企业接受Y县乙企业委托加工应税消费品,取得不含增值税加
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
最新回复
(
0
)