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
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
2010-06-30
33
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.
A weather map is synoptic because it ______.
选项
A、summarizes a great deal of information
B、can be interpreted accurately
C、appears daily
D、shows changing fronts
答案
A
解析
由第一段最后一句中的“thus”可推知,此句中的“synoptic picture of conditions”是前面几句中提到的天象图各种信息作用的综合,所以A的意思最准确。
转载请注明原文地址:https://kaotiyun.com/show/UsJd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Withunfamiliarhumanbeings,whenweacknowledgetheirhumanness,wemustavoidstaringatthem,andyetwemustalsoavoidign
Withunfamiliarhumanbeings,whenweacknowledgetheirhumanness,wemustavoidstaringatthem,andyetwemustalsoavoidign
Youmaysaythatthebusinessofmarkingbooksisgoingtoslowdownyourreading.【C1】______probablywill.That’soneofthe【C2】
Childrenwhogriptheirpenstooclosetothewritingpointarelikelytobeatadisadvantageinexaminations,【C1】______tothe
TheAmundsen-ScottSouthPoleStationmadeheadlinesinAprilwhenthedoctorforthatremotesciencefacilitywastakenserious
Paintingyourhouseislikeaddingsomethingtoahugecommunalpictureinwhichtherestofthepaintingisdoneeitherbynatu
Averyimportantworldproblem—infact,Ithinkitmaybemostimportantofallthegreatworldproblemswhichfaceusatthepr
WorldleadersmetrecentlyatUnitedNationsheadquartersinNewYorkCitytodiscusstheenvironmentalissuesraisedattheRio
Humour,whichoughttogiverisetoonlythemostlight-heartedandgayfeelings,canoftenstirupvehemenceandanimosity.Evi
Theauthorthinksontheproblemofcloning,Ms.Macklinistoo
随机试题
铸造支托的长度应为磨牙面近远中径的
监理工程师对施工图进行审核的主要内容有()。
为避免孔口高程误差,应认真校核原始水准点和各孔口绝对高程,每根桩钻孔前()。
生产者物价指数是衡量通货膨胀的常用指标之一。()
下列属于《“十三五”旅游业发展规划》的主要任务的有()和提高人民群众满意度。
V5接口定义的巨大影响和深远意义有()。
=________。
BlastsfromthePast1.Volcanoesweredestructiveinancienthistory.Notbecausetheywerebigger,butbecausethecarbondi
Whenamanisbuyingclotheshedoesnotmindhowmuchhehastopayfortherightthings.Womenshoppersforclotheswelcomes
UglyIsOnlySkin-deepItmaynotbemuchtolookat.Butbeneaththathumbleexteriorbeatsanair-cooledengine.Itwon’t
最新回复
(
0
)