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
专升本
Most forest fires are caused by human carelessness or ignorance. Forest fire prevention, therefore, is mainly a problem of creat
Most forest fires are caused by human carelessness or ignorance. Forest fire prevention, therefore, is mainly a problem of creat
admin
2021-11-11
12
问题
Most forest fires are caused by human carelessness or ignorance. Forest fire prevention, therefore, is mainly a problem of creating bette, understanding of the importance of forests, an awareness of the danger of fire in the woods, and a sense of personal responsibility to safeguard the forests from danger. This is not an easy job.
Careless smokers are responsible for thousands of forest fires each year. Many of these are started when cigarette butts(烟蒂) and matches are thrown from automobiles. Others are caused by hunters, hikers(徒步旅行者). fishermen, or woods workers who are careless in disposing of their smoking materials. The Forest Service has posted rules in many of the National Forests that prohibit smoking except in certain designated(指定的) areas. Many of the states have laws against throwing lighted materials from automobiles. The prevention of smoker-caused fires, however, depends upon changing the attitudes and behavior of millions of people who smoke in hazardous areas.
The most important natural cause of fire is lightning. This accounts for 11 per cent of forest fires on protected land for the entire nation. In the Western Slates, lightning causes a much higher percentage of fires than it does in the East.
Advances in knowledge of fire weather are helping forest protection forces to know when to be alert to lightning-caused fires. Adequate and well-equipped forces can control them quickly and hold the damage to a minimum. Experiments in ”seeding" thunder clouds to prevent or control the lightning itself have been in process for many years, but new breakthroughs are needed for any significant reduction in the fires lightning starts.
Preventing smoker-caused forest fires is mainly a problem of_____.
选项
A、building the proper knowledge and habits in human beings
B、safeguarding the forests from fire
C、posting rules in forests
D、holding the damage to a minimum
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/wNRC777K
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
Manypeoplehavetheexperiencethatgettingupinthemorningissodifficultandpainful.Thismightbecalledlaziness.ButD
Howoftenonehearschildrenwishingtheyweregrown-up,andoldpeoplewishingtheywereyoungagain.Eachagehasitspleasure
Nooneknowsexactlyhowmanydisabledpeoplethereareintheworld,butestimatessuggestthenumberisover450million.The
Fillingincompanyapplicationformscanbecomeaboringandrepetitivetask,yetanycarelessnessonanapplicant’spartcandr
WhenIwaslearningcalligraphy(书法),myteachertoldmeastory.Acalligraphertaughthandwriting.Oneofhisstudentswhoo
Duringherjunioryearofhighschool,CandiceBackus’steacherhandedherasheetandinstructedthe17-year-oldtomapouther
Duringherjunioryearofhighschool,CandiceBackus’steacherhandedherasheetandinstructedthe17-year-oldtomapouther
Whenwearenotengagedinthinkingaboutsomedefiniteproblem,weusuallyspendabout95percentofourtimethinkingaboutou
Fillingincompanyapplicationformscanbecomeaboringandrepetitivetask,yetanycarelessnessonanapplicant’spartcand
随机试题
A.阻断黑质-纹状体通路的DA受体B.减少突触间隙NA、5-HT的递质浓度C.抑制单胺类递质的再摄取D.阻断中脑-边缘系统通路的DA受体E.激动CNS阿片受体
脊髓损伤急性期的康复措施是脊髓损伤恢复期的康复措施是
滑坡现象是由以下哪种原因造成的?
防止直接和间接接触电击的方法()
在证券交易市场发展的早期,场外交易市场的主要形式是()
顾客心智的特点有()。
旅游规划评估的结果不应向社会公布。()
巴黎和会上,列强讨论的中心问题是()。
设f(x)是以ω为周期的连续函数,证明:一阶线性微分方程y’+ky=f(x)存在唯一的以ω为周期的特解,并求此特解,其中k≠0为常数.
Withtheprogressinmodernmedicine,itisnolongerdifficulttoattainoldage.
最新回复
(
0
)