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
89
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.
The observation of weather conditions by satellites is advantageous because it______.
选项
A、gives the scientist information not obtained readily otherwise
B、enables man to alter the weather
C、uses electronic instruments
D、is modern
答案
D
解析
本文第二段第二句提到运用卫星,科学家可以对只有很少气象站的地区的气象进行分析、判断,这与答案D意思相近,所以本题正确答案应当为D。
转载请注明原文地址:https://kaotiyun.com/show/OsRd777K
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
TheSupremeCourt’sdecisionsonphysician-assistedsuicidecarryimportantimplicationsforhowmedicineseekstorelievedying
TheSupremeCourt’sdecisionsonphysician-assistedsuicidecarryimportantimplicationsforhowmedicineseekstorelievedying
TheSupremeCourt’sdecisionsonphysician-assistedsuicidecarryimportantimplicationsforhowmedicineseekstorelievedying
Aweathermapisanimportanttoolforgeographers.Asuccessionofthreeoffourmapspresentsacontinuouspictureofweather
Aweathermapisanimportanttoolforgeographers.Asuccessionofthreeoffourmapspresentsacontinuouspictureofweather
Aweathermapisanimportanttoolforgeographers.Asuccessionofthreeoffourmapspresentsacontinuouspictureofweather
随机试题
A.固定性湿啰音B.散在湿啰音,伴哮鸣音C.弥漫性哮鸣音D.双肺底Velcro音COPD
葡萄胎最常见的症状是
开放性眼外伤角膜伤口的缝合应注意()
A.瞪目直视B.戴眼反折C.横目斜视D.目睛定微E.睑废两眼固定,不能转动,固定前视者,称为
根据《抗菌药物临床应用管理办法》,关于抗菌药物临床应用管理的说法,正确的是
下列各项中,可以在异地开立有关银行结算账户的有()。
根据《票据法》的规定,下列各项中属于票据基本当事人的是()。
对不存在活跃市场的投资品种进行基金资产估值,说法正确的是()。Ⅰ.应采用市场参与者普遍认同的估值技术确定公允价值Ⅱ.估值日无市价的,但最近交易日后经济环境未发生重大变化,应采用最近交易市价确定公允价值Ⅲ.如估值日有市价的,应采用市
Seeingtheghost-likefigure,themanfled,______thedoorbehindhim.
Thefollowingparagraphsaregiveninawrongorder.ForQuestions41-45,youarerequiredtoreorganizetheseparagraphsintoa
最新回复
(
0
)