首页
登录
职称英语
Scientists have created a tomato that can grow on salty water. The plant is
Scientists have created a tomato that can grow on salty water. The plant is
游客
2024-07-03
42
管理
问题
Scientists have created a tomato that can grow on salty water. The plant is the first crop of its kind ever produced in the world.
Its significance can not be overestimated (高估). The new technology can help mankind solve the problem of feeding its ever-expanding population. It is estimated that by 2025 the world population will amount to more than 9 billion, an increase of 3 billion over 2000. Each day 240,000 more people are born, ready to be fed like the rest of us. Unfortunately, not all the land on Earth can be used to grow crops for humans. About 24.7 million acres of the problem is irrigation (灌溉). When farmers water their crops, salts in the water also enter the soil. Over time, salts such as sodium (钠) and calcium (钙) build up to such a point that they severely harm the growth of crops. Salts destroy most plants’ ability to draw up water through their roots.
But, the new variety of tomato produced by American and Canadian scientists can store salts in its leaves so that the fruit doesn’t taste salty. Researchers hope this technology will enable areas of poor-quality land to become productive (多产的). And they can feed some of the world’s growing population. [br] Why do salts left in the soil harm the growth of crops?
选项
A、They are poisonous to the plant.
B、They contain sodium and calcium.
C、They upset most plant’s ability to draw up water through their roots.
D、They destroy the soil’s ability to water plant.
答案
C
解析
细节题。根据第二段最后一句Salts destroy most plants’ ability to draw up water through their roots. 可知,盐可以破坏很多植物通过根系吸收水分的能力,故选C。
转载请注明原文地址:https://tihaiku.com/zcyy/3661198.html
相关试题推荐
Scientistshavecreatedatomatothatcangrowonsaltywater.Theplantis
Interestingasdolphins(海豚)aretoscientists,itistheirintelligenceand
Interestingasdolphins(海豚)aretoscientists,itistheirintelligenceand
Interestingasdolphins(海豚)aretoscientists,itistheirintelligenceand
Whatdoscientiststhinkofdreams?Manyscientistsbelievethatdreamsare_____
Whatdoscientiststhinkofdreams?Manyscientistsbelievethatdreamsare_____
Whatdoscientiststhinkofdreams?Manyscientistsbelievethatdreamsare_____
About15yearsago,scientistsdidmanyexperiments(develop)_____thetoolsto
Thearticle(attracted)(considerate)interestfromscientists(who)study(physi
Unlikemanyscientists,AlbertEinsteinmadehisdiscoveries______.[br]Einste
随机试题
56.TheBankingActof1933,knownastheGlass-SteagallAct(葛斯法案),separate
theprocedureforsortingthroughtheremainsofthefire[br]howUpparklooked
[originaltext]WhenMr.Finchretired,heboughtasmallcottageinaseasid
简述高血压病非药物治疗的内容。
刘赶三是清末京剧()行演员。A.生 B.旦 C.净 D.丑
在全口义齿下颌后牙排列时,下列排牙方法正确的是()A.第一磨牙远中颊
下列哪味药不具强筋骨作用A.桑寄生B.寻骨风C.五加皮D.千年健E.狗脊
下列根尖周病的治疗要求中,说法不对的是A.要求无菌操作技术 B.根管内应为无菌
2020年1月,自然人甲和乙设立丙有限责任公司,双方约定甲出资10万元,
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
)