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
22
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
WhydidPeterJuddjointhearmy?[br]Whatdidtheofficerfeelwhenheheardt
[originaltext]W:NowI’vegotyourbackground,let’stalkaboutthemanagement
E公司是一家公共事业公司,在政府政策指导下运营,它有义务保障广大客户的电力供应,
A.是自然光 B.是完全偏振光且光矢量的振动方向垂直于入射面 C.是完全偏振
在损失的工作时间里,工人在工作班内消耗的工作时间属于人工损失时间的是()。
患者每至经行期间,发热,恶寒,无汗,鼻塞流涕,咽喉痒痛,咳嗽痰稀,头痛身痛;舌淡
对
2009年7月,某县工商执法人员检查发现,王某店内销售的46盒“××乌鸡蛋”外包
水利工程发生质量事故后由项目法人负责组织有关单位提出处理方案的是()。A.
2~12岁小儿平均身长(cm)推算公式是A.年龄×7+70 B.年龄×5+70
最新回复
(
0
)