首页
登录
职称英语
According to this passage, the Roman soldiers mainly depended upon ______to send
According to this passage, the Roman soldiers mainly depended upon ______to send
游客
2024-10-22
32
管理
问题
According to this passage, the Roman soldiers mainly depended upon ______to send their messages.
Greek soldiers sent messages by turning their shields toward the sun. The flashes reflected light could be seen several miles away. The enemy did not know what the flashes meant, but other Greek soldiers could understand the messages. [14]Roman soldiers in some places built long rows of signal towers. When they had a message to send, the soldiers shouted it from tower to tower. If there were enough towers and enough soldiers with loud voices, important news could be sent quickly over distance.
[16]In Africa, people learned to send messages by beating on a series of large drums. Each drum was kept within hearing distance of the next one. The drum beats were sent out in a special way that all the drummers understood. Though the messages were simple, they could be sent at great speed for hundreds of miles.
In the eighteenth century, [15]a French engineer found a new way to send short messages. In this way, a person held a flag in each hand and the arms were moved to various positions representing different letters of the alphabet. It was like spelling out words with flags and arms.
Over a long period of time, people sent messages by all these different ways. [17]However, not until the telephone was invented in America in the nineteenth century could people send speech sounds over a great distance in just a few seconds.
选项
A、fine weather
B、signal towers
C、the spelling system
D、arm movements
答案
B
解析
短文中提到,罗马人建造了许多信号塔来传递信号,故B是正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3812439.html
相关试题推荐
Accordingtothispassage,theRomansoldiersmainlydependedupon______tosend
Accordingtothispassage,theRomansoldiersmainlydependedupon______tosend
ThedisputebetweentheEuropeanUnionandtheUnitedStatesismainlyabout[br
Accordingtothisnews,whatisthemainpointofthedebateoverimmigrationre
Accordingtothisnews,whatisthemainpointofthedebateoverimmigrationre
Itcanbeinferredfromthepassagethat[br][originaltext]Hotlineshave
Itcanbeinferredfromthepassagethat[originaltext]Hotlineshavebecome
WhodidtheWTO’straderuleshurtaccordingtotheactivists?[originaltext]
Accordingtothenews,thetwoLibyansare______.[br][originaltext]Two
Accordingtothenews,thetwoLibyansare______.[originaltext]TwoLibyan
随机试题
OfalltheemployedworkersintheUnitedStates,12.5millionarepartofa
Itisnotoftenrealizedthatwomen【C1】______ahighplaceinsouthernEur
Inthissection,youwillhearashortpassage.Forquestions21—30,completeth
WhichofthefollowingdoesnotbelongtotheIslandofGreatBritain?A、England
Ifyoudidn’tknowanybetter,youmightthinkthatStar,Snuppy,CCandAND
ToliveintheUnitedStatestodayistogainanappreciationforDahrendorf
甲亢的心血管系统特征性表现是A.心脏增大 B.心律嬖常 C.心尖部第一心音亢
治疗小儿泄泻脾肾阳虚证,应首选A.健脾益气,参苓白术散 B.补脾温肾,附子
A. B. C. D.
工程实践中,常见的投标策略有( )。A.提出改进技术方案 B.提出改进设计方
最新回复
(
0
)