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
Many of the most damaging and life threatening types of weather torrential rains, severe thunderstorms, and tornadoes(龙卷风) begin
Many of the most damaging and life threatening types of weather torrential rains, severe thunderstorms, and tornadoes(龙卷风) begin
admin
2010-06-11
52
问题
Many of the most damaging and life threatening types of weather torrential rains, severe thunderstorms, and tornadoes(龙卷风) begin quickly, strike suddenly, and disappear rapidly, destroying small regions while leaving neighboring areas untouched. Such event as a tornado struck the northeastern section of Edmonton, Alberta, in July 1987. Total damages from the tornado exceeded $ 250 million, the highest ever for any Canadian storm.
Conventional computer models of the atmosphere have limited value in predicting short lived local storms like the Edmonton tornado, because the available weather data are generally not detailed enough to allow computers to study carefully the subtle atmospheric changes that come before these storms. In most nations, for example, weather-balloon observations are taken just once every twelve hours at locations typically separated by hundreds of miles. With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events.
Until recently, the observation intensive approach needed for accurate, very short-range forecast, or "Nowcasts", was not feasible. The cost of equipping and operating many thousands of conventional weather station was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were hard to overcome. Fortunately, scientific and technological advances have overcome most of these problems. Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observation over large regions at a relatively low cost. Communications satellites can transmit data around the world cheaply and instantaneously, and modem computers can quickly compile and analyze this large volume of weather information. Meteorologists(气象学者)and computer scientists now work together to design computer programs and video equipment capable of transforming raw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly. As meteorologists have begun using these new technologies in weather forecasting offices, Nowcasting is becoming a reality.
The word" exceeded" in paragraph I most probably means ______.
选项
A、added up to
B、were more than
C、were about
D、were less than
答案
B
解析
exceed的意思是“超过”。
转载请注明原文地址:https://kaotiyun.com/show/28KK777K
0
大学英语六级
相关试题推荐
A、Shewashurtbytheman.B、Shelosthertemper.C、Shedidn’tspeaktoherhusband.D、Shemissedthedinnerparty.AW:Ican’t
Thefirstparagraphsuggeststhat______.Citiesmakegoodhomesforperegrinefalconsbecausetheyprovide______.
A、Becauseshehadtoomanythingswithher.B、Becauseshewassick.C、Becauseshewasquitelazy.D、Becauseshedidn’twanttog
A、Sheistiredofherpresentjob.B、Herphonenumberhaschanged.C、Shedoesn’thaveafaxmachine.D、Shemayquitherpresent
A、Tofindoutwhenthefilmstarts.B、Toshowthemanareview.C、Toworkonitwhiletheyareatthelibrary.D、Tokilltimebe
A、Theweatherwillbeclearandfine.B、Rainwillprobablycome.C、Therewillbeafog.D、Fineweatherwillcontinue.BWhatkind
By2030,peopleover65inGermany,theworld’sthird-largesteconomy,willaccountforalmosthalftheadultpopulation,compar
Theresearchersfindthattherearestrongerconnectionsbetween______.Nowadaysintheschools______.
Givingupsmokinginthefirstfewmonthswillmakesmokershaveastrongerdesire______.SinceHabitrolcontainsnicotine,i
TheAmericaneconomicsystemisorganizedaroundabasicallyprivateenterprise,marketorientedeconomyinwhichconsumerslarg
随机试题
仲景学说中,“极热”()
治疗青霉素所致过敏性休克的首选药物是
A.中和剂B.还原剂C.吸附剂D.保护剂E.沉淀剂药用碳属于
规划衔接要遵循的原则有()。
某市现状人均城市建设用地为60m2,规划期因发展需要适当提高人均用地水平,按国家标准,该市规划人均用地可以调整的最大幅度是()。
仅限于主井、风井中采用的井壁结构形式是()。
某商品批发企业2000年末“本年利润”账户贷方余额为20万元,申报缴纳企业所得税6万元。税务机关于2001年5月对该企业进行所得税检查时发现下列情况:(1)将本年银行存款利息收入5000元记入职工福利费中,账务处理为:借:银行存款5000贷:应付福利
教师威信实质上反映了一种良好的师生关系。()
试述内隐记忆与外显记忆的区别。
若有定义语句charc=’\101’;则变量c在内存中占
最新回复
(
0
)