首页
登录
职称英语
[originaltext] The Global Positioning System (GPS) has become indispensable
[originaltext] The Global Positioning System (GPS) has become indispensable
游客
2025-01-17
34
管理
问题
The Global Positioning System (GPS) has become indispensable for soldiers, pilots, hikers, yachtsmen, even bankers, ever since the U.S. Department of Defense started filling the sky with satellites about 25 years ago, in order to improve navigation for fighters, bombers and warships. More recently, GPS has allowed the development of precision-guided weapons, the smart bombs that home in on targets: between Serbia four years ago and this year’s Iraq war, the proportion of such bombs used rose from no more than 3 percent to at least 60 percent.
However, the GPS is also an essential prop to countless civil applications; for every military user, there are now 100 civilian users. It provides not only satellite-navigator systems in cars and boats; it is used by Internet service providers, by banks and by surveyors. One day it might be used by air traffic control systems to permit "free flight", in which pilots of commercial aircraft find their own route and stay clear of other aircraft, without the cumbersome business of radio telephone contact with controllers on the ground.
选项
A、To improve navigation for warplanes and warships.
B、To guide smart bombs that home in on moving targets.
C、To collect meteorological data
D、To sense remote volcanic eruptions.
答案
A
解析
掌握表因果关系的信号词,有助于迅速判断因果关系,从而得到正确答案。如原文中in order to短语的使用,便表明了这种关系。
转载请注明原文地址:https://tihaiku.com/zcyy/3917439.html
相关试题推荐
Likehumans,ratscanalsobecome______todrugsandunabletoextricatethemselv
Still,takingtogether,China’seffortsareshapingatechnosystemquitediffer
Asthefederalgovernmentshutdownapproachesthetwo-weekmark,it’sbecome
Asthefederalgovernmentshutdownapproachesthetwo-weekmark,it’sbecome
Asthefederalgovernmentshutdownapproachesthetwo-weekmark,it’sbecome
Asthefederalgovernmentshutdownapproachesthetwo-weekmark,it’sbecome
Asthefederalgovernmentshutdownapproachesthetwo-weekmark,it’sbecome
Asthefederalgovernmentshutdownapproachesthetwo-weekmark,it’sbecome
AlexEzehoftheCentreforGlobalDevelopment,isathink-tankinWashington,r
Teachersofcross-culturalcoursesshouldhelpthestudentstobecome______toth
随机试题
Wedecidedtohavethepartyinthegarden______inthehall.A、insteadB、instea
ThetownofStavanger,Norway,wasquietandpeacefuluntiltheearly1960’s,
[originaltext]ABritishadventurerhascompletedaheroic14,600-milefligh
(2015年)关于税务师可提供涉税服务的说法,错误的是()。A.可以接受委托代
土工合成材料的直剪摩擦试验所用土为标准细粒砂土。()
关于口服甾体避孕药避孕机制,不正确的有A.使子宫内环境不利于孕卵着床 B.抑制
高级管理层由()组成A.总行行长 B.总行副行长 C.执行董事 D.
刚入学的儿童写字用铅笔和田字格本,是由他们的()水平决定的。A.视觉发展
桑椹具有的功效是( ) A.益胃生津,润肺清心 B.润肺止咳,清心安神
集合竞价采用()原则。A.价格优先 B.时间优先 C.最大成交量 D.平
最新回复
(
0
)