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 very important ways: they supply him with wood and other products ;they give him shade; and the
Trees are useful to man in three very important ways: they supply him with wood and other products ;they give him shade; and the
admin
2011-01-21
81
问题
Trees are useful to man in three very important ways: they supply 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 draw quick profit from the trees, he has cut them down in large numbers, only to find that without them he has lost the best friends he had. 2 000 years ago a rich and powerful country cut down its trees to build warships, with which to gain itself an empire. It gained the empire but, without its trees, its soil became hard and poor. When the empire fell to pieces, the home country found itself faced floods and starvation.
Even if a government realizes the importance of adequate supply of trees, it is difficult for it to persuade the villager to see this. The villager wants wood to cook his food with; and he can earn money by producing charcoal or selling wood to the townsman. He is usually too lazy or too careless to plant and take care of new trees. So, unless the government has a good control system, or can educate the people, the forests will slowly disappear.
This does not only mean that the villager’s sons and grandsons have fewer trees. The results are even more serious: for where there are trees their roots break the soil up -- allowing the rain to sink in -- and also bind the soil, thus preventing its being washed away easily; but where there are no trees, the rain falls on hard ground and flows away from the surface, causing floods and carrying away with it the rich topsoil , in which crops grow so well. When all the top soil is gone, nothing remains but a useless desert.
What is the most important function of trees?
选项
A、Providing fuel.
B、Offering shade.
C、Preventing natural disasters.
D、Providing charcoal.
答案
C
解析
由第二段首句“. . . the third of these services is the most important.”可知选C。
转载请注明原文地址:https://kaotiyun.com/show/U13d777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
TheAmericaneconomicsystemisorganizedaroundabasicallyprivate-enterprise,market-orientedeconomyinwhichconsumerslarg
Onlythreestrategiesareavailableforcontrollingcancer:prevention,screeningandtreatment.Lungcancercausesmoredeaths
Theinitialimpactofcomputerswasintheareaofentertainment.Ifyouwalkedbyavideoarcadeintheearly1980s,youcould
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand1
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand1
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand1
humanchild此题考查考生对于具体信息的听辨能力。原句为“Moreimportant,forDr.Cameron’spurposes,thebabymonkeycanbecomparedtoahighlyanxiousor
61)Inafamilywheretherolesofmenandwomenarenotsharplyseparatedandwheremanyhouseholdtasksaresharedtoagreater
destroyingfamilyrelationship
Whatdoestheprofessortellherstudentstodo?
随机试题
债券收益与市场利率的关系是()
Businessesthrowaroundtheterm"innovation"toshowthey’reonthecuttingedgeofeverythingfromtechnologyandmedicineto
文学发展与社会发展的关系是什么?
Peoplefromdifferentculturessometimesdothingsthatmakeeachotheruncomfortable,sometimeswithoutrealizingit.MostAmer
近年来,分子生物学实验室常使用一种电泳,用以分离DNA小片断请说明是那一种电泳
氨基糖甙类药物中,耳和肾脏毒性最大的是
A公司于20×5年7月1日购买B公司股票100000股,每股市价为32元,手续费4560元。A公司在20×5年12月31日仍持有该股票,此时,市价为每股35元。A公司于20×6年2月1日以每股34元卖出B公司股票60000股,手续费及印花税共计8415元。
一个销售员以$100买进了一件夹克,他设定卖价等于在买价的基础上加上50%的卖价;在销售这件夹克的时候,这个人又在卖价的基础上打2折出售,那么这个销售员的净利润是多少?
A、Theywereexpensive.B、Noonebelievedthem.C、Theywereunsuccessful.D、Theywereoftennotwelcomed.C文章提到,第一代的绿色广告因为市场营销不佳,
A、Heloveshispresentjob.B、Hehaschangedhisjob.C、Heislookingforwardtoretirement.D、Heisgoingtolosehisjob.C
最新回复
(
0
)