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
A、Fishes die in lakes. B、Elements needed for healthy plant growth are washed out of soft. C、Trees grow much more slowly than the
A、Fishes die in lakes. B、Elements needed for healthy plant growth are washed out of soft. C、Trees grow much more slowly than the
admin
2013-06-03
90
问题
W: Dr. Cottam. You’re studying the effects of air pollution on trees?
M" That’s right.
W: Could you tell us something about it?
M: Trees in industrial areas grow much more slowly than they should. Worse still, trees hundreds of miles away also seem to be damaged by these same industries.
W: You mean "acid rain", I suppose.
M: Yes.
W: What effects does acid rain have on the environment’?
M: For a start, lakes polluted by it in this way can no longer support any fish. Gradually the acid rain washes elements out of the soil essential for healthy plant growth.
W: But I think that there’s no general agreement on the causes and effects of acid rain.
M: That’s right. The distances involved are so great that it’s impossible to prove what’s actually going on. And no one will willingly accept even partial responsibility for something that happens miles away.
W: But trees are dying. No one can deny that.
M: Exactly.
W: So how does your investigation go?
M: We’ve set up special glasshouses to keep a careful observation on the growth of the plants. We pump in controlled amounts of air pollutants, including ozone, which isn’t always associated with acid rain.
W: Which industries emit ozone?
M: Mainly oil refining industry. We also occasionally cool the atmosphere in the greenhouses, which causes frost.
W: Have you had any results from these experiments yet?
M: It’s still too early to draw any definite conclusions. But we’ve noticed that plants at low temperatures are affected more severely than those at normal temperatures.
W: So cold weather makes the effects of pollution worse?
M: It certainly looks that way. But we still hope to be able to persuade industries to take measures to reduce emissions of gases into the atmosphere.
选项
A、Fishes die in lakes.
B、Elements needed for healthy plant growth are washed out of soft.
C、Trees grow much more slowly than they should.
D、It contributes to climate change and causes frost.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/ROg7777K
0
大学英语四级
相关试题推荐
A、Solarenergy.B、Syntheticfuel.C、Alcoholfuel.D、Electricitypower.D细节辨认题。本题关键句为“Everyoneisgoingtodriveelectrically-pow
"Mostepisodesofabsent-mindedness-forgettingwhereyouleftsomethingorwonderingwhyyoujustenteredaroom--axecausedby
JohnDeweybelievedthateducationshouldbeapreparationforlife,thatapersonlearnsbydoing,andthatteachingmust_____
SharksSharksareamazingfishthathavebeenaroundsincelongbeforethedinosaursexisted.Theyliveinwatersallovert
A、Tosupplyteacherswithdrinks.B、Todosomeresearchonnutrition.C、Toraisemoneyforschoolaffairs.D、Todevelopstudents
A、Cleanupherroom.B、Getthereportback.C、Notwaitforhim.D、Notbothertogettheumbrella.D推理题。Clearup意思是“天气放晴”,当然就不需要雨
Everyonewantstobehealthyandhappy.【C1】______,illnessoraccidentsmayoccurwithoutany【C2】______.Frequentlythepersonw
Everyonewantstobehealthyandhappy.【C1】______,illnessoraccidentsmayoccurwithoutany【C2】______.Frequentlythepersonw
TheUnitedStatesisa"telephoneland".Almosteveryoneusesthetelephoneto【B1】______socialengagements,visitwithfriends,
Howusefularetheviewsofpublicschoolstudentsabouttheirteachers?Quiteuseful,accordingtopreliminaryresultsrele
随机试题
根据隧道二次衬砌纵向分段施工要求,分段长度一般为()m。
下列房地产转让中,可以不办理土地使用权出让手续的有()。
B注册会计师是V公司2005年度会计报表审计的项目经理,在审计过程中,需对助理人员编制的有关投资的审计工作底稿进行复核。请你代为做出正确的专业判断。
老年大学的出现体现了当代高等教育的发展趋势是()。
简述学生学习的特殊性。
给定资料1.“2010年‘六-五’世界环境日纪念大会——青年环境友好使者推动全民低碳减排暨《节能减排保护环境》特种邮票首发仪式”6月5日在京召开。环境保护部部长周生贤在致辞中强调,青年一代要积极行动起来,做中国环保新道路的探索者和实践者,加强环境
许多创业成功的人士都没有漂亮的学历,但这并没有妨碍他们成功。事实告诉我们,漂亮的学历对于成功具有重要作用。但是,一个人,只要有准确的信息分析能力、高度的经济敏感和果断的个人勇气,就能很快学会如何做出正确的决定,对于一个缺少以上三种素养的人,漂亮的学历没有什
大同小异:去伪存真
Lookatthechartbelow.Itshowsarestaurant’sincome,totalexpenditureandadvertisingcostsduringaneight-monthperiod.
Itismy(believe)______thatjoggingisgoodforthebodyandforthemind.
最新回复
(
0
)