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
考研
A weather map is an important tool for geographers. A succession of three of four maps presents a continuous picture of weather
A weather map is an important tool for geographers. A succession of three of four maps presents a continuous picture of weather
admin
2013-06-10
96
问题
A weather map is an important tool for geographers. A succession of three of four maps presents a continuous picture of weather changes. Weather forecasts are able to determine the speed of air masses and fronts; to determine whether an individual pressure area is deepening or becoming shallow and whether a front is increasing or decreasing in intensity. They are also able to determine whether an air mass is retaining its original characteristics or taking on those of the surface over which it is moving. Thus, a most significant function of the map is to reveal a synoptic picture of conditions in the atmosphere at a given time.
All students of geography should be able to interpret a weather map accurately. Weather maps contain an enormous amount of information about weather conditions existing at the time of observation over a large geographical area. They reveal in a few minutes what otherwise would take hours to describe. The United States weather Bureau issues information about approaching storms, floods, frosts, droughts, and all climatic conditions in general. Twice a month it issues a 30-day "outlook" which is a rough guide to weather conditions likely to occur over broad areas of the United States. These 30-day outlooks are based upon an analysis of the upper air levels with often set the stage for the development of air masses, fronts, and storms.
Considerable effort is being exerted today to achieve more accurate weather predictions. With the use of electronic instruments and earth satellites, enormous gains have taken place recently in identifying and tracking storms over regions which have but few meteorological stations. Extensive experiments are also in progress for weather modification studies. But the limitations of weather modification have prevented meteorological results except in the seeding of super-cooled, upslope mountainous winds which have produced additional orographical precipitation on the windward side of mountain ranges. Nevertheless, they have provided a clearer understanding of the fundamentals of weather elements.
选项
A、wind speed
B、thermal changes
C、fronts
D、barometric pressure
答案
B
解析
本文在第一段第三句中列举了从气象图上可以确定的信息,其中"the speed of air masses"即A选项,"fronts"即C选项,"whether an individual pressure area"即D选项,惟有B所包含的信息不在列举之列,所以此题的正确答案应当为B。
转载请注明原文地址:https://kaotiyun.com/show/0wd4777K
0
考研英语一
相关试题推荐
Overthelast20years,energysystemsandserviceshaveexpanded.Californianowmeetsitsenergyneedsusingavarietyofsour
Dr.Frankenstein’sremarksarementionedinthetextJudgedfromtheinformationinthelastparagraph,wecanpredictthatthe
UnitedStatesSenatorJohnGlennreturnedtoorbitaboardthespaceshuttleDiscoveryinlateOctober,1998,36yearsafterhis
TheauthordoesnotincludeamongthesciencesthestudyofWhyiselectricaltechnologymentionedinthethirdparagraph?
ConcerningthewaystheAIDSviruscanbepassed,whichofthefollowingstatementsiswrong?Thefifthparagraphismainlyabo
TheoverallattitudeofthewritertowardstheFrenchsoccerteamis______.WhatdoesthewriterthinkoftheBrazilteam?
Whatcanbeinferredfromthesentence"Sometimeslifegetstobetoomuch"(Sentence4,Paragraph3)?Whatdoesthephrase"pi
Thefactisthattheenergycrisis,whichhassuddenlybeenofficiallyannounced,hasbeenwithusforalongtimenow,andwill
Whatdoesthefirstsentenceofthepassagemean?Whatdoestheword"mind-boggling"(Sentence1,Paragraph3)probablymean?
(46)GenoaisontheItalianRiviera,butitssteelworks,containerparksandoilterminalarenottheusualcharmsofamilliona
随机试题
梧桐树是阔叶树,因此,梧桐树不是常绿树。对上述省略三段论,指出其大项、小项和中项,将被省略部分恢复,并说明它是三段论中的哪一部分。
下列哪一项关于处方的概念是错误的
下半口义齿,舌侧为铸造金属基托,唇颊侧为塑料基托连接,该义齿蜡型完成后,进行塑料成形此类义齿的塑料用量约为
按痰饮停积的部位分类,饮流胁下的是
有关混凝土碱集料反应的叙述,有错的是:
现新建一所大学,下列()包括在该新建大学教学楼单项工程综合概算中。
海关规定对在海关注册登记的企业给予十位数代码编号,称为“经营单位代码”。下列正确表述十位数代码的组成规定的是()。
What’sthebasicdifferencebetweenEnglishfootballandAmericanfootball?
Wethoughttheplantsalldiedfromlackofrain,andweredelightedtoseenew______appearing.
A、Somefriendsandrelativesthatshehadnotimetovisitbefore.B、Theclosestfriendsandrelatives.C、Thefriendsandrelati
最新回复
(
0
)