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
2024-01-28
19
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/3401019.html
相关试题推荐
[originaltext]Joeisastudentatacollegeinanurbanarea.Duringhisfi
[originaltext]Joeisastudentatacollegeinanurbanarea.Duringhisfi
[originaltext]Joeisastudentatacollegeinanurbanarea.Duringhisfi
[originaltext]Mr.Fosterstartedhispublishingbusinesswithonlyonemaga
[originaltext]Cambridgeisabout90kilometresnortheastofLondon.Itiso
[originaltext]W:Goodeveningandwelcometothisweek’sBusinessWorld,aprog
[originaltext]W:Goodeveningandwelcometothisweek’sBusinessWorld,aprog
[originaltext]W:Goodeveningandwelcometothisweek’sBusinessWorld,aprog
[originaltext]M:Hello,ProfessorJohnson.W:Hello,Tony,sowhatshallwewor
[originaltext]M:Hello,ProfessorJohnson.W:Hello,Tony,sowhatshallwewor
随机试题
TimeIfyoucan【T1】______,youcanknowthetimeofday.Butnooneknow
文化遗产culturalheritage
ClassifythefollowingasfirstoccurringAbetween1945and1950Bbetween1950
BudgetforAmusementDisneyland,Kno
结构中不含有羧基的药物是()。A:阿司匹林 B:布洛芬 C:吲哚美辛 D
患者,男性,25岁,左侧后牙自发痛。夜间剧痛为主诉就诊,检查:左下8前倾阻生,牙
某旅行社推广一条海南旅游线路,其6月价格明显低于1月价格,这属于折让定价策略中的
中国最早的工艺百科全书是完成于17世纪30年代的《天工开物》。它的作者是()。A
A.10%氧化锌软膏 B.10%樟脑软膏 C.溃疡膏 D.赛庚啶 E.紫
患儿男,8个月。咳嗽3天,发热伴气促1天。查体:呼吸急促,口周略发青,咽部充血,
最新回复
(
0
)