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
52
管理
问题
According to this passage, the Roman soldiers mainly depended upon ______to send their messages. [br]
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、Neither the Greek soldiers nor their enemy could understand the messages.
B、African soldiers shouted from tower to tower to pass messages.
C、Using flags to send messages was found by a French engineer.
D、Only by using telephone could people send speech sounds quickly.
答案
C
解析
短文提到,一个法国工程师发明了一种传递信息的新方法,他们用双手各拿一面旗帜,挥舞手臂,拼出不同的字母。所以选项C表述正确,为本题答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3812440.html
相关试题推荐
Accordingtothispassage,theRomansoldiersmainlydependedupon______tosend
Accordingtothispassage,theRomansoldiersmainlydependedupon______tosend
Accordingtothispassage,theRomansoldiersmainlydependedupon______tosend
Accordingtothisnews,whatisthemainpointofthedebateoverimmigrationre
Itcanbeinferredfromthepassagethat[br][originaltext]Hotlineshave
Accordingtotheconversation,whatisoneofthedrivingforcesofshooting?[b
Accordingtotheconversation,whatisoneofthedrivingforcesofshooting?[o
WhodidtheWTO’straderuleshurtaccordingtotheactivists?[originaltext]
Accordingtothenews,thetwoLibyansare______.[br][originaltext]Two
Accordingtothenews,thetwoLibyansare______.[br][originaltext]Two
随机试题
TenBadListeningHabitsI.CallingtheSubjectDull
Povertyisnot______inmostcitiesthough,perhapsbecauseofthecrowdedcondi
Whenwethinkofentrepreneurs,mostofusimagine【C1】______,successful,ov
Nursing,asatypicallyfemaleprofession,mustdealconstantlywiththefal
对新批号质控品应确定控制限,控制限通常以下述哪一个表示A.标准差 B.平均值
鼻咽癌发病率较高的是A.种族间无明显差异 B.黄色人种 C.黑色人种 D.
以下哪种食物胆固醇含量最高( )。A.猪肝 B.瘦猪肉 C.鸡腿肉 D.
针对高校开设的各类短训班的特殊要求,在物业经营管理中,物业服务企业不需要协调和安
办公室新购买了一批扶贫物资,分别是米、面、油、鸡蛋和棉被。需要摆放到不同的场室,
水污染影响型建设项目的调查范围,除覆盖评价范围外,受纳水体为河流时,在受回水影响
最新回复
(
0
)