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
2014-09-27
60
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 a-bout 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 oro-graphical 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/dsRd777K
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
HomingisoneofthemostimportantissuesconcerningChinesepeoplenow.Thefollowinggraphshowsthepriceofhousein1987a
InAnglo-Americatherearethreemajorethnicgroups.ThefirstistheoriginalIndianpopulation,whotodayrepresentsamin
TheSupremeCourt’sdecisionsonphysician-assistedsuicidecarryimportantimplicationsforhowmedicineseekstorelievedying
Aweathermapisanimportanttoolforgeographers.Asuccessionofthreeoffourmapspresentsacontinuouspictureofweather
Properarrangementofclassroomspaceisimportanttoencouraginginteraction.Mostofushavenoticedhowimportantphysica
随机试题
关于包皮过长和包茎的描述,错误的是
患者,1个月前发热,胸痛,咳嗽,有大量脓痰,经用抗炎治疗不见好转,1周前咳嗽加重,并有呼吸困难。胸部X线片见左胸大片状阴影,经胸穿抽出脓汁,反复穿刺排脓不能控制,其治疗应为
A、唇舌径在牙颈部最大B、根管较小,根管侧壁薄,仅厚1mmC、近远中径在面宽而近颈部窄D、髓室顶与髓室底相距较近E、牙冠向舌侧倾斜,髓室偏向颊侧上颌前牙开髓时应从舌面窝中央向牙颈方向钻入,因为
女,26岁,甲亢患者,拟行手术治疗而住院。麻醉前用药不宜使用的是
以下叙述正确的是()。
路基高度设计时应考虑地下水、毛细水和冰冻的作用,并应使路肩边缘高出路基两侧()高度不使其影响路基的强度和稳定性。
简要说明我国商业银行经营的主要业务。
( )是一个理性思考及做出决定的过程,包括制定介入目标及选择为了达到目标而采取的行动。
A、Tousea7-daybuspass.B、Tousea13-daybuspass.C、Tousea90-daybuspass.D、Touseaone-yearbuspass.C①题目选项都包含buspa
"Laugh,andtheworldlaughswithyou:weep,andweepalone."SowrotethepoetEllaWheelerCox.Emotionsarecatching,andmos
最新回复
(
0
)