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、It was created mainly for scientific research.
B、It works better in fine weather conditions.
C、It must be located on at least three satellites.
D、Its service is free of charge.
答案
D
解析
考查对细节的记忆,符合短文听力“听到什么选什么”的解题原则,答案为D。A错在scientific research,应为military use;GPS在任何天气情况下都一样起作用,故B错;C中的指代有误,主语若是A GPSreceiver才与原文相符,故也排除C。
转载请注明原文地址:https://tihaiku.com/zcyy/3401020.html
相关试题推荐
[originaltext]W:Steve,canyoutellmehowlongyou’vebeenapubowner?M:We
[originaltext]W:Steve,canyoutellmehowlongyou’vebeenapubowner?M:We
[originaltext]Therearemorethan400museumsintheUSthatcelebratethe
[originaltext]Therearemorethan400museumsintheUSthatcelebratethe
[originaltext]AconflictisformingonthestreetsofNewYorkCitybetween
[originaltext]AconflictisformingonthestreetsofNewYorkCitybetween
[originaltext]AburialplaceinWashingtonDCisusinggoatsinsteadofpoi
[originaltext]WhenMattySallinwasworkingonadegreeinartsandtechnol
[originaltext]WhenMattySallinwasworkingonadegreeinartsandtechnol
[originaltext]Atypicallargesupermarketoffersaround17000to20000it
随机试题
森林防火forestfireprevention
[originaltext]Venice,asmall,watersidecityinnortheastItaly,boilswit
关于出版物本量利分析中增值税项目的说法,正确的有( )。A.增值税分为销项增值
既是职业道德教育的主要内容,也是职业道德修养的主要内容的是()。A.人生观
夏季病毒性脑炎的常见病因是A.外感寒湿 B.外感湿热 C.感受温热毒邪 D
有直接肾毒性的药物是A.氯霉素 B.华法林 C.异烟肼 D.巴比妥 E.
下列主要自肾小管分泌排泄的药物是A.链霉素 B.奥美拉唑 C.青霉素 D.
PICC插管最常选择的血管是A.贵要静脉 B.正中静脉 C.头静脉 D.腋
以下说法正确的是()。A.2017年10-12月全国铁路旅客周转量合
强心苷对下列哪种原因所致的慢性心功能不全疗效较好A、甲状腺功能亢进 B、维生素
最新回复
(
0
)