首页
登录
职称英语
[originaltext] For three groups of explorers formed by college students and
[originaltext] For three groups of explorers formed by college students and
游客
2024-01-20
63
管理
问题
For three groups of explorers formed by college students and young white collars, it started out as a wonderful trip. They were enjoying themselves exploring the Inner Mongolian desert. But when the sandstorm came, the trip became a disaster.
The drama unfolded during the May Day holiday. One girl did not make it before the students were rescued. The. group was eventually found with the help of a GPS receiver.
GPS, or global positioning system, is a satellite-based navigation system made up of a network of 24 satellites. It was originally created for military use by the US in 1980s but is now available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day. And the service is free.
GPS satellites circle the earth twice a day and transmit signals and information to the earth. GPS receivers take this information and calculate the user’s exact location. A GPS receiver must be locked on to the signals of at least three satellites to calculate the latitude and longitude of its location. With four or more satellites in view, the receiver can determine the user’s altitude. Once the user’s position has been determined, the GPS receiver can calculate other information, such as speed, direction, distance to destination, and a whole lot more.
22. What is true about the trip made by the young people?
23. What is the main topic of the passage?
24. Which of the following is true about the GPS?
25. What must be determined first before the GPS receiver can calculate other information?
选项
A、A thrilling exploration in the desert.
B、How GPS saved the survivors.
C、What is GPS and how it works.
D、The danger of space exploration.
答案
C
解析
主旨题应该概括且含有核心词,符合此要求的是C,全篇大部分文字都是在介绍GPS及其功用。
转载请注明原文地址:https://tihaiku.com/zcyy/3379850.html
相关试题推荐
[originaltext]ThedebtcrisisinGreecehasgainedtheworld’sattention.Howev
[originaltext]Areyouadogperson?Maybeyouhaveoneathomeandenjoytaking
[originaltext]ThefirstmantocombinethesteamenginesandcartswasRichard
[originaltext]W:Goodafternoon.WelcometotheGrandWoodwardHotel.HowmayI
[originaltext]ThecoastofCanada’sNewfoundlandiscommonlycalled"IcebergAl
[originaltext]Askayoungchild"Howwasschooltoday?"andyou’relikelytohe
[originaltext]TheAmericanPetProductsAssociationcarriesoutaNationalPet
[originaltext]M:I’mnevergoingtoshopatSunFashionShopagain!W:It’snot
[originaltext]TheUnitedStateshasalonghistoryofmakingwhiskey-akindof
[originaltext]Authoritiessayeveryonehasbeenevacuatedfromaluxuryhoteli
随机试题
ReadthearticlebelowaboutCrashingCarstoTextforHelp.Choosethecorrect
[originaltext]M:Hello,Mary.It’sJohn.I’vegotsomethingtotellyouaboutt
Ifthere’sonefoodthat’sdevelopedanundeservedreputationovertheyears
Forthispart,youareallowed30minutestowriteanessaycommentingonthe
Theworldisgoingthroughthebiggestwaveofmergersandacquisitions(收购)
奥美拉唑治疗消化性溃疡的作用机制是()A. B.阻断促胃液素受体而减少胃酸
【答辩题目解析】 1.物理教学中,学生了解物理学史有什么作用? 【参考答案】 物理学史是研究物理学发展历史的科学,它不仅真实记载描述了物
下列抽样方法中,属于随机抽样方法的有( )。A.任意抽样 B.整群抽样 C
下列预算编制方法中,可能导致无效费用开支项目无法得到有效控制的是()。A.增量预
医师未取得处方权开具药品处方的,由县级以上卫生行政部门责令暂停执业活动的时间为A
最新回复
(
0
)