首页
登录
职称英语
What is the most important function of trees? [originaltext] Trees are useful
What is the most important function of trees? [originaltext] Trees are useful
游客
2024-09-20
23
管理
问题
What is the most important function of trees?
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. 2000 years ago a country cut down its trees to build warships to gain itself an empire. It gained the empire but, without its trees, its soil became hard and poor. 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. So, unless the government has a good control system, the forests will slowly disappear. 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.
选项
A、Providing fuel.
B、Offering shade.
C、Preventing natural disasters.
D、Providing charcoal.
答案
C
解析
细节题。4个选项都是文中提及的树木的作用,但题目问的是"the most important function”,文章提出树木最重要就是第三个作用:防止干旱和洪涝灾害的发生。故C项符合题意。
转载请注明原文地址:https://tihaiku.com/zcyy/3765692.html
相关试题推荐
What’sthepassagemainlytalkingabout?[br][originaltext]You’veprobably
What’sthepassagemainlytalkingabout?[br][originaltext]You’veprobably
What’sthepassagemainlytalkingabout?[originaltext]You’veprobablyheard
Whatisthewomantryingtodo?[br][originaltext]W:John,haveyouchosenap
Whathasthewomanbeendoingnow?[br][originaltext]W:Hi,Steve.M:Hi,Sus
Whathasthewomanbeendoingnow?[br][originaltext]W:Hi,Steve.M:Hi,Sus
Whatwillthemanprobablydofirstaftergraduation?[br][originaltext]M:Wha
Whatwillthemanprobablydofirstaftergraduation?[br][originaltext]M:Wha
Whatwillthemanprobablydofirstaftergraduation?[originaltext]M:Whatdoy
WhatisNOTtherealfunctionofMicrosoft’sleadingproductWindows?[originalt
随机试题
Canyouchangeoneletterofeachofthesewordstomaketwonewwordswithaco
[originaltext]W:Whatsortofhoursdoyouwork,Steve?M:Well,Ihavetowork
某工程项目建设单位与施工单位依法签订了施工合同,合同中估算工程量为5300m2,
工业建筑耐火等级为三级的楼板燃烧性能和耐火极限应满足()。A.不燃性1.50h
模拟信号的波形图如图所示,它的时间域描述形式是:A.u(t)=2(1-e-10
哪项不符合先天性甲状腺功能减低症()A.低体温 B.出生体重小于正常新
下列防腐剂不影响尿中蛋白质和糖定性实验的是( )。A.浓盐酸 B.甲苯 C
《变电验收管理规定第23分册站用交流电源系统验收细则》:UPS竣工(预)验收中运
科学家发现16个生物钟基因大部分在一天中固定的时间发挥作用,其中有9个在早晨工作
某一高层封闭式办公大楼,终日采用集中式空调系统。近日工作人员诉说呼吸道干燥、鼻塞
最新回复
(
0
)