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
38
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,
Theproductsofthechemicalindustrymakeamajorcontributiontopresent-daystandardsofliving,andlifetoday______impossib
OneSundaymorningthelocalpostoffice______animportantspecialdeliverylettertomyhome,thoughitwasaddressedtomeat
______thehelpthiscomputermayprovide,itshouldnotbeseenasasubstituteforfundamentalthinkingandreasoningskills.
Thedairyindustryhastakengreatpainstoincreasethenumberofproductsfromwhichthebutterfathasbeen______.
Whilefashionisthoughtofusuallyinrelationtoclothing,itisimportanttorealizethatitcoversamuchwiderdomain.Iti
Whilefashionisthoughtofusuallyinrelationtoclothing,itisimportanttorealizethatitcoversamuchwiderdomain.Iti
随机试题
Itisdifficult______aworldrecordandevenmoredifficultto______it.
在门诊诊断甲状腺功能亢进程度,最简便而主要的指标是()
下面哪项,不是影响金一瓷热膨胀系数的因素
DIC最常见的病因是
物权[温州大学2018年研]
下列影响市场营销活动效果的变量中可以在短期内被人为地控制的是()。
公安机关要依法保护国家公共财产和个人私有财产,预防、制止非法侵害、毁损公共财产和公民个人私有财产的不法行为,严厉打击各类经济犯罪活动。
属性窗口分为4个部分,这4个部分分别是______。
黒板に字が大きく書いて()。
Mostparents,Isuppose,havehadtheexperienceofreadingabedtimestorytotheirchildren.Andtheymusthave【C1】______how
最新回复
(
0
)