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
Conventional wisdom says trees are good for the environment. They absorb carbon dioxide—a greenhouse gas—from the atmosphere and
Conventional wisdom says trees are good for the environment. They absorb carbon dioxide—a greenhouse gas—from the atmosphere and
admin
2018-10-19
43
问题
Conventional wisdom says trees are good for the environment. They absorb carbon dioxide—a greenhouse gas—from the atmosphere and store it as carbon while releasing oxygen, a process for which forests have been called "the lungs of the planet". The roots of trees have been thought to trap sediments and nutrients in the soil. Trees have also been credited with steadying the flow of these rivers, keeping it relatively constant through wet and dry seasons, thus preventing both drought and flooding. It is all nonsense, concludes a research published this week. A four-year international study led by researchers at the University of Newcastle, in Britain, and the Free University of Amsterdam, identifies several myths about the link between forests and water. For example, in arid and semiarid areas, trees consume far more water than they trap. And it is not the trees that catch sediments and nutrients, and steady the flow of the rivers, but the fact that the soil has not been compressed.
The World Commission on Water estimates that the demand for water will increase by around 50% in the next 30 years. Moreover, around 4 billion people—one half of the world’s population— will live in conditions of severe water stress, meaning they will not have enough water for drinking and washing to stay healthy, by 2025.
The government of South Africa has been taking a tough approach to trees since it became the first to treat water as a basic human right in 1998. Trees lose water through evaporation(the technical term is transpiration)at twice the rate of grassland or South Africa’s unique fynbos scrubland. In a scheme praised by the hydrologists, the state penalizes forestry companies for preventing this water from reaching rivers and underground aquifers.
In India, large tree-planting schemes not only lose valuable water but complicate the true problem identified by the hydrologists: the unregulated removal of water from aquifers to irrigate crops. Farmers need no permit to drill a borehole and, as most farmers receive free electricity, there is little economic control on the volume of water pumped. In the Kolar district in Karnataka, wells have dried up as the water table has plummeted from six metres to 150 metres below ground.
Questions 71—75
Complete the summary with a maximum of two words from the passage, changing the form where necessary.
It is commonly believed that trees are good for the environment, as they absorb carbon dioxide and release oxygen: the roots of trees can trap water and【R1】______ the flow of rivers. However, a recent study has found that this belief is【R2】______.
According to the research, trees lose【R3】______ water through evaporation than they trap. In South Africa, forestry companies are punished as the trees they planted prevented water from【R4】______ rivers and underground aquifers. In India, farmers drilled many wells and used the underground water to【R5】______their farmland. This has lowered water table to 150 metres below ground. Many trees have been planted and in fact these trees complicate the existing problem.
【R2】
选项
答案
(all)nonsense
解析
文中第一段中间提到“It is all nonsense,concludes a research published this week”,因此填入(all)nonsense。
转载请注明原文地址:https://kaotiyun.com/show/7FjK777K
本试题收录于:
D类竞赛(专科)题库大学生英语竞赛(NECCS)分类
0
D类竞赛(专科)
大学生英语竞赛(NECCS)
相关试题推荐
EffectsofSmokingFormanyyears,scientistshavewarned/thatsmokingtobaccoisbadforyourhealth./Yetpeoplearo
TheAmericanDreamEachindividualmaydefinetheAmericandreamdifferently./Butthegeneralideaisthatapersonin
Thevisitorsdecidedtostayinourcityfor________twodaysastheywantedtohavealookaround.
MoreandmoreChinesescienceandtechnologypapershavebeenincludedinSCI.Lookatthefollowingchartcarefullyandwritey
PASSAGETHREEHowlongdoesittakefor100hectaresofrainforesttobedestroyed?
Turninyourcollectionofindustry-suppliedfreebiesandGoodmanwillsendbackafewreplacementpensbearingtheNoFreeLunc
Turninyourcollectionofindustry-suppliedfreebiesandGoodmanwillsendbackafewreplacementpensbearingtheNoFreeLunc
Turninyourcollectionofindustry-suppliedfreebiesandGoodmanwillsendbackafewreplacementpensbearingtheNoFreeLunc
Turninyourcollectionofindustry-suppliedfreebiesandGoodmanwillsendbackafewreplacementpensbearingtheNoFreeLunc
随机试题
以PEM为大前提,再增补下列哪项为小前提,可有效推出结论SOP?()
Manyoftheworld’spollutionproblemshavebeencausedbythecrowdingoflargegroupsofpeopleintothecities.Tosupplyfor
男性,32岁,从高处跌下后尿道口流血,不能自行排尿,收住院。体检:腹软,无压痛,脐下3cm可触及圆形肿物,叩诊浊音,骨盆拍片见右耻骨上下肢骨折。导尿管可插入20cm,流出鲜红色血性液体,未见尿液。你认为不可能的诊断有()
煤矿分配职工上岗作业前未进行安全教育、培训的,经煤矿安全监察机构责令限期改正,逾期不改正的,由煤矿安全监察机构处()的罚款。
根据我国《城市房地产管理法》的规定,以出让方式取得土地使用权进行房地产开发的,满()时间未动工开发的,可以无偿收回土地使用权。
施工质量事故发生的原因有()。
Americanstodaydon’tplaceaveryhighvalueonintellect.Ourheroesareathletes,entertainers,andentrepreneurs,notschol
关于“五四”青年节.组织一个活动,怎么安排?
教师职业的特点。(陕西师范大学2014年研)
Forthispart,youareallowed30minutestowriteashortessayaboutyouropinionsontheissueofheavytraffic.Youressays
最新回复
(
0
)