(单词翻译:单击)
C
Greek soldiers sent messages by turning their shields(盾)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.
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.
In Africa, people learned7 to send messages by beating on a series of large drums(鼓). 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, 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. 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.
65. According to this passage, the Roman way of communication depended very much upon .
[A] fine weather
[B] high tower
[C] the spelling system
[D] arm movements
66. Which of the following statements is true?
[A] Neither the Greek soldiers nor their enemy could understand the message.
[B] African soldiers shouted from tower to tower to pass message.
[C] Telephone was invented by a French engineer.
[D] Only by using telephone could people send speech sounds quickly.
收听单词发音
1
tub
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| n.桶,塑料杯,纸杯;盆,洗澡盆,浴缸 | |
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2
females
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| n.雌性动物( female的名词复数 );女人 | |
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3
standing
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| n.持续,地位;adj.永久的,不动的,直立的,不流动的 | |
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4
mid
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| adj.中央的,中间的 | |
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5
surroundings
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| n.周围的事物(或情况),环境 | |
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6
attentively
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| adv.聚精会神地;周到地;谛;凝神 | |
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7
learned
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| adj.有学问的,博学的;learn的过去式和过去分词 | |
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