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
2023-06-26
62
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.[22]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.[25]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 do we learn about the trip made by the young people?
23. What is the main topic of the passage?
24. What does the speaker say 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/2783787.html
相关试题推荐
[originaltext]ThomasTommyCarterisaplantscientistinNorthCarolina.H
[originaltext]W:Tony,[8]you’vebeenaracing-driverfornearly10years.You’
[originaltext]W:Tony,[8]you’vebeenaracing-driverfornearly10years.You’
[originaltext][5]/[6]TherecentlyreleasedreportfromtheInternationalAg
[originaltext][5]/[6]TherecentlyreleasedreportfromtheInternationalAg
[originaltext]The19thcenturyWildWestcriminalBillytheKidhasbeende
[originaltext][1]DefenseofficialsintheUnitedStateshaveconfirmedthat
[originaltext][1]DefenseofficialsintheUnitedStateshaveconfirmedthat
[originaltext][23]Thesolution,bothtopreventtheexcessesofpraiseand
[originaltext][23]Thesolution,bothtopreventtheexcessesofpraiseand
随机试题
Would-belanguageteacherseverywherehaveonethingincommon:Theyallwan
Whybankruptyourselfinaso-calledoldpeople’shome?Tryahealthspa—it
Sodium(钠)isakeycomponentofsalt.Eatingtoomuchofitcan【C1】______to
企业信息化建设的根本目的是__()__。A.解决管理问题,侧重于对IT技术管理
某隧道处于Ⅳ级围岩区,隧道开挖前未对围岩进行加固。二衬施作完成后,采用BJSD-
下列关于法院适用普通程序审理案件时送达起诉状副本的表述,正确的是( )。A、应当
1999年以来,为适应我国农业和农村经济发展新阶段的需要,农村信用社积极开展金融
()是指债权人按照合同的约定占有债务人的动产,债务人未履行到期债务的,债权人
气行血功能失常可见A.气虚血少 B.气虚血瘀 C.气虚出血 D.气随血脱
按风险潜在损失形态划分,可将风险划分为()A、财产风险和责任风险 B、地区风险
最新回复
(
0
)