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 h
Trees are useful to man in three important ways: they provide him with wood and other products : they give him shade: and they h
admin
2015-11-16
54
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 in large numbers, only to find mat 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 rain falls on hard ground and flows away, causing floods and carrying 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.
What is the most important service of trees to man according to the passage?
选项
A、They help him make money.
B、They give him wood and other products.
C、They help him prevent droughts and floods.
D、They give him shade.
答案
C
解析
事实细节题。第二段第一句话说人们没有认识到第三种服务是最重要的,而第一段中提出第二种服务是帮助预防干旱和洪水,因此答案为C。
转载请注明原文地址:https://kaotiyun.com/show/xFRO777K
0
成人本科学位英语
相关试题推荐
Theseplasticflowerslookso________thatmanypeoplethinktheyarereal.
Increasingly,overthepasttenyears,people—especiallyyoungpeople—havebecomeawareoftheneedtochangetheireatinghabit
Doyouknowinsurance(保险)?Buyinginsuranceisa(56)bywhichpeoplecanprotectthemselves(57)largelosses.Protectionagain
Doyouknowinsurance(保险)?Buyinginsuranceisa(56)bywhichpeoplecanprotectthemselves(57)largelosses.Protectionagain
Howcanwegetridofgarbage?Dowehaveenoughenergysourcestomeetourfutureenergyneeds?Thesearetwoimportantqu
—______?—No,thanks.I’mjustlookingaround.I’llletyouknowifIwantsomething.
Thechairman(proposed)that(everyspeaker)(mustlimit)himself(tofifteenminutes).
Itwasaholidayweekend.Thepoliceofficersweresittinginahotroom【C1】______instructions(指示)fromtheircaptain.Oneoft
ThethiefA(wanted)B(toget)inC(and)D(stole)something.
Burney:Thereweretwomen,Ithink.No,three.Theyranintothebankandtheonewiththegun,thetallone,herunsuptothe
随机试题
对风疹和麻疹具有鉴别意义的是
用一台交换机作为中心节点把几台计算机连接成网络,此网络拓扑是______________。
女性,26岁。刺激性咳嗽,伴间断发热半年余。胸片示双肺中下斑片状密度增高影。气管镜示左主支气管可见大量干酪坏死物覆盖。为进一步诊断最需要做的检查是
甲公司在纸手帕等纸制产品上注册了“茉莉花”文字及图形商标。下列哪些未经许可的行为构成侵权?
改革向(),社会主义市场经济体制逐步完善,将进一步激发社会活力和发展动力。
背景资料某机电设备安装公司经招标投标,获得某厂生产线的机电设备安装工程,并与业主签订了施工合同。合同规定工程范围、工期、质量标准、安全环境要求。其中质量标准和要求按部颁标准执行,主要材料如钢材、电缆、ф50以上的管道阀门等由业主提供,安装现场的协
根据证券法律制度的规定,凡发生可能对上市公司证券及其衍生品种交易价格产生较大影响的重大事件,投资者尚未得知时,上市公司应当立即提出临时报告,披露事件内容,说明事件的起因、目前的状态和可能产生的影响。下列各项中,属于重大事件的有()。
在课程标准中提供的实施建议主要包括()。
学生对自己人际关系的意识,属于下列哪方面的自我意识?()
TheWonderfulWorldofSmallThere’saquietrevolutiongoingon,anditsnameisnanotechnology.Ahostofinnovationsare
最新回复
(
0
)