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
2023-06-30
26
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/2797329.html
相关试题推荐
[originaltext]M:ProfessorKennedyhasbeenverybusythissemester.AsfarasI
[originaltext]M:ProfessorKennedyhasbeenverybusythissemester.AsfarasI
[originaltext]M:ProfessorKennedyhasbeenverybusythissemester.AsfarasI
[originaltext]M:ProfessorKennedyhasbeenverybusythissemester.AsfarasI
[originaltext]M:ProfessorKennedyhasbeenverybusythissemester.AsfarasI
[originaltext]Somecountriesmayhaveoneuniformfishinglawcoveringthe
[originaltext]Somecountriesmayhaveoneuniformfishinglawcoveringthe
[originaltext]Whilesomepeopleseemedtobeblessedwithbeautifulandexp
[originaltext]Whilesomepeopleseemedtobeblessedwithbeautifulandexp
[originaltext]W:Idon’tknowwhatI’mgoingtodo!It’sgoingtobeimpossible
随机试题
【B1】[br]【B3】[originaltext]Microsoftisawell-knowncorporationanditsmain
ArecentpollindicatedthathalftheteenagersintheUnitedStatesbelieve
Onesummernight,onmywayhomefromworkIdecidedtoseeamovie.Iknew
关于债券,以下说法正确的是( )。A.一般来说,企业债券的收益率低于政府债券
酶联免疫吸附试验用()技术检测待测血清()浆)中的HIV抗体。A、抗原夹心捕捉
关于大肠埃希菌的描述,正确的是( )。A.不能分解乳糖产酸产气 B.在SS平
Thechangeinthatvillagewasmiraculou
2016年6月份,我国社会消费品零售总额26857亿元,同比增长10.6%,环比
下列水体中,微生物最少的是哪个?A.池塘 B.海洋 C.湖泊 D.地下水
1978年,安徽省凤阳县小岗村的( )拉开了农村改革的帷幕。A.取消农业税
最新回复
(
0
)