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
Trees are useful to man in three important ways: they provide him with wood and other products: they give him shade:and they hel
Trees are useful to man in three important ways: they provide him with wood and other products: they give him shade:and they hel
admin
2016-04-30
21
问题
Trees are useful to man in three important ways: they provide him with wood and other products: they give him shade:and they help to prevent droughts and floods.
Unfortunately, in many parts of the world, man has not realized that the third of these services is the most important. In his eagerness to make money from trees, he has cut them down inlarge numbers, only to find that without them he has lost the best friends he had. And besides, he is usually too careless to plant and look after new trees. So the forests slowly disappear.
This does not only mean that man will have fewer trees. The results are even more serious: for where there are trees, their roots break up soil — allowing the rain to sink in — and also bind the soil, thus preventing it from being washed away easily: but where there are no trees, the ran falls on hard ground and flows away, causing floods and canying away the rich top-soil. When all the top-soil is gone, nothing remains but worthless desert.
Two thousand years ago a rich and powerful country cut down its trees to build warships, with which to gain itself an empire. It set up the empire but, without its trees, its soil became poor and it grew weak. When the empire fell to pieces, the home country found itself faced with floods and starvation.
Why do forests in many parts of the world slowly disappear?
选项
A、New trees are not looked after properly
B、Many trees have been cut down by man
C、Man has not paid enough attention to planting trees
D、A11 of the above
答案
D
解析
事实细节题。第二段说明了森林逐渐减少的原因,可知D正确。
转载请注明原文地址:https://kaotiyun.com/show/iVRO777K
0
成人本科学位英语
相关试题推荐
IfEnglishstudyistocontributetoyourfuturecompetence_____,itshouldbelearntsystematically.
Bythetimetheyoungestwasfifteen,themotherwouldhavebeeninherearlyfiftiesandwouldexpecttoliveafurthertwenty
A(Lateron),childrenB(attemptto)maketheirpaintingsC(lookasclosely)aspossibleD(totherealthings)theyarerepresent
Peopletravelforalotofreasons.Sometouristsgotoseebattlefieldsorreligiousshrines.Othersarelookingforculture,o
Telecommuting—substitutingthecomputerforthetriptothejob—hasbeenhailedasasolutiontoallkindsofproblemsrelatedt
Sportsandgamesmakeourbodiesstrong,preventusfromgettingtoofat,andkeepushealthy.Buttherearenottheironlyuse.
Ifadinnerguestistobelatefordinner,heshould______.Howdidtheotherguestsfeelwhenthemanwaseatinghispeaswi
Forwellover2000yearstheworld’sgreatreligionshavetaughtthevirtuesofatrust-ingheart.Nowthereisanotherreasont
Itiswisetorememberthatyoudonothavetobuyanythingfromanysalesperson.Yououghttobuyonlythosethingsyoureally
Whilewewereonholiday,ourneighbortook______ourhouse.
随机试题
下列主体中,不能成为行政主体的是()。
()物质受磁场极大的吸力,磁导率随磁场强度的变化而变化。
1978年12月中共十一届三中全会以来改革开放新时期的最突出的标志是()
血的生成主要离不开气的
李某血型的表现型为B型,其基因型应是
慢性支气管炎慢性迁延期是指
在财务报表附注中对或有事项的说明包括()。
阅读下列材料,然后回答后面的问题。在当年麦哲伦遇难的地方——菲律宾马克坦岛北岸,建有一座奇特的纪念亭,亭中耸立着一块石座铜碑。碑的正面载有这样的文字:费尔南多.麦哲伦。1521年4月27日,费尔南多.麦哲伦死于此地。他在与马克坦岛酋长拉普拉普的战士们交战
抵押权的实现方式包括()
Whenspeakingaboutsciencetoscientists,thereisonethingthatcanbesaidthatwillalmostalwaysraisetheirindignation,
最新回复
(
0
)