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 provide him with wood and other products; they give him shade; and th
Trees are useful to man in three very important ways, they provide him with wood and other products; they give him shade; and th
admin
2013-01-03
94
问题
Trees are useful to man in three very important ways, they provide him with wood and other products; they give him shade; and they help to prevent droughts (干旱) and floods.
Unfortunately, man has not realized that the third of these services is the most important. Two thousand 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 by flood and starvation.
Even though a government realizes the importance of a plentiful supply of trees, it is difficult for it to persuade villagers to see this. The villagers want wood to cook their food with; and they can earn money by selling wood. They are usually too lazy to plant and look after the trees. So, unless the government has a good system of control, or can educate the people, the forests will slowly disappear.
This does not only mean that the villagers’ children and grandchildren will 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 flood.
The role of trees is to______.
选项
A、loosen soil
B、keep soil in position
C、harden soil
D、both A and B
答案
D
解析
本题考查考生的总结能力及对具体细节的理解。答案对应文章最后一段的第二句话: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.这句概括树木的作用为松弛、固定土壤。也可走捷径,从连词also看应为两个作用,故选D。
转载请注明原文地址:https://kaotiyun.com/show/ymDO777K
0
成人本科学位英语
相关试题推荐
Newspapersmustnotonlyprovideforthereaderthefacts,pure,______objectivelyselectedfactsbutalsosupplyinterpretation,
Someofthemostimportantconceptsinphysics______theirsuccesstothesemathematicalsystems.
Theproductsofthechemicalindustrymakeamajorcontributiontopresent-daystandardsofliving,andlifetoday______impossib
______thehelpthiscomputermayprovide,itshouldnotbeseenasasubstituteforfundamentalthinkingandreasoningskills.
Thedairyindustryhastakengreatpainstoincreasethenumberofproductsfromwhichthebutterfathasbeen______.
OneofthemostimportantcomponentsofCorporateResourceManagementistorecruitandretainthebestworkforcepossible.Unfo
Whilefashionisthoughtofusuallyinrelationtoclothing,itisimportanttorealizethatitcoversamuchwiderdomain.Iti
随机试题
在RHEL5系统中,若在“/etc/shadow”文件内jerry用户的密码字串前添加“!!”字符,将导致()结果。
非职务技术成果的()。
房地产估价不仅必要,而且由于房地产量大面广及房地产交易、抵押、税收、征收、损害赔偿等多方面形成对房地产估价的大量需求,使得房地产估价在古今中外都是估价活动中的主流。()
当市场情况如下图所示时,下列说法正确的有( )。
向原普通股股东按其持股比例、以低于市价的某一特定价格配售一定数量新发行股票的融资行为是()。
下列对教学策略的基本特点叙述不正确的是()。
目前研究男女智力的性别差异的基本结论之一是()。
以下关于生活常识,说法不正确的是:
假定MyClass为一个类,则执行MyClass a b(2),*p;语句时,自动调用该类构造函娄( )次。
Unlikethescientist,theengineerisnotfreetoselecttheproblemwhichinterestshim;hemustsolvetheproblemsastheyaris
最新回复
(
0
)