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
2024-01-31
20
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 [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. [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 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/3409231.html
相关试题推荐
[originaltext]TheWorldCarnivalissettostartitssecondfunfairinBeij
[originaltext](16)Wedon’tknowhowthefirstfirewasmade.Earlyfireson
[originaltext](16)Wedon’tknowhowthefirstfirewasmade.Earlyfireson
[originaltext](22)MayandJunearethemonthswhenmostAmericancollegesa
[originaltext](22)MayandJunearethemonthswhenmostAmericancollegesa
[originaltext]Whetherit’scurledup,flatonthestomachorstretchedout
[originaltext]Whetherit’scurledup,flatonthestomachorstretchedout
[originaltext](22)Afewdegreescanmakeabigdifferencewhenitcomesto
[originaltext](22)Afewdegreescanmakeabigdifferencewhenitcomesto
[originaltext](22)Afewdegreescanmakeabigdifferencewhenitcomesto
随机试题
Somemarriagesseemtocollapsesosuddenlythatyou’dneedacrystalballt
回路配接设备在列表显示方式下,第一列为回路-地址以及设备所在的X和Y分区。
文件归档属于文书部门的任务。()
电压互感器的二次侧严禁()。A.开路 B.短路 C.开路和短路 D.既可
光滑面对物体的约束反力,作用在接触点处,其方向沿接触面的公法线()。A.指向受
用于提交和回滚事务的语句为( )。A.ENDTRANSACTION和ROLL
财政政策本身具有自动抑制经济波动的作用,这种财政政策的运行机制包括()。A
《中共中央关于坚持和完善中国特色社会主义制度推进国家治理体系和治理能力现代化若干
管道井、电缆井、排气道、垃圾道等竖向管井必须独立建造,其井壁应为耐火极限不低于(
黏液质气质类型的高级神经活动过程的特点是()。 (A)强、平衡、灵活(B)
最新回复
(
0
)