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
2023-06-25
54
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[24]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/2782517.html
相关试题推荐
[originaltext]W:Excuseme,couldIaskyousomequestions?M:Ofcourse.W:I
[originaltext]Cairoisknownforitsovercrowdedroads,irregulardrivingpr
[originaltext]Cairoisknownforitsovercrowdedroads,irregulardrivingpr
[originaltext]WoolworthsisoneofthebestknownnamesontheBritishHigh
[originaltext]Kenyanpolicesayonepersonwaskilledand26injuredinane
[originaltext]AlthoughmostuniversitiesintheUnitedStatesareonasemes
[originaltext]AlthoughmostuniversitiesintheUnitedStatesareonasemes
[originaltext]Nonverbalcommunicationhastodowithgestures,movementsand
[originaltext]Nonverbalcommunicationhastodowithgestures,movementsand
[originaltext]Peopleallovertheworldtodayarebeginningtohearandlear
随机试题
[img]2014m1s/ct_ebecfrm_ebfrread_0056_20133[/img]A、AsMarshalseaissatisfiedwi
[originaltext]M:Ineedahaircut.Butyoulookprettybusytoday.Doyouhave
我国第一部诗歌总集是()A.《山海经》 B.《乐府诗集》 C.《楚辞》 D
《齐鲁晚报))2009年7月15日报道,某省十几个城市的玉米患“粗缩病”,该病是
项目信息门户实施的条件包括()A、硬件、用户、组织件、主持者 B、软件、用户、
患儿,1岁半,半天来发热、流涕、咳嗽,半小时前突然抽风一次,持续约5分钟,为全身
对上述违法行为承担责任的主体可以通过( )保护自己的权益。A.提起行政复议
租赁一台设备,价值200万元,租期为十年,租赁后期满的残值为10万元,归租赁公司
火灾自动报警系统设计中,下列哪些场所,宜设置缆式线型火灾探测器?()A.电缆夹
垃圾填埋场选址时应注意对环境的影响,必须()。A.远离饮用水源 B.尽量
最新回复
(
0
)