相关阅读：
本课主要单词
1.telecommunication n. 电信，远距离通信
请注意这个词的构成，tele-是一个前缀，意思是“远”，“远距离”。用tele-为前缀构成的词很多，如： television(电视)， telegram(电报) ，telegraph(电报机;发电报) ，telephone(电话)，telescope(望远镜)等。
The Japanese hope that we can be persuaded to buy their telecommunications equipment.(日本人希望能劝说我们购买他们的电信设备。)
AT&T has been allowed to enter the field of telecommunications in Shanghai.(在上海，AT&T公司已获准进入电信领域。)
2.via prep. 经由，经过，通过
He went to Shanghai via Wuxi.(他经由无锡去上海。)
He booked a ticket to Washington via New York.(他预定了一张经由纽约去华盛顿的票。)
They transmitted television pictures via satellite all over the world.(他们通过卫星把电视画面传送到世界各地。)
3.transmit v. 播送，发射，传送，传递
Glass transmits light and water transmits sound.(玻璃能透光，水会传声。)
The TV program was transmitted by satellite throughout the world.(电视节目被卫星播送到世界各地。)
They were reluctant to transmit the information to the control center.(他们不愿意把信息传送到控制中心去。)
4.photography n. 摄影，照相;摄影术
photo是一个词根，表示“光;光电;照相术”;graph表示“记录”。以photo为词根的词还有： photochemistry(光化学)，photocopy(影印)，photoelectric(光电的)，photograph(照片)， photographer(摄影师)，photosensitive(感光的)等等。以graph为词根的词有：autograph(亲笔)， biography(传记)，calligraphy(书法)，geography(地理学)，telegraph(电报)等等。
5.telegraph n. 电报机;电报 v.用电报发送;发电报
我们刚刚讲到过tele是一个前缀，表示“远，远距离”，graph是一个词根，表示“写，记录。”
She told him the news by telegraph.(她用电报把消息告诉了他。)
I telegraphed him the result last week.(上个星期，我把结果告诉他了。)
6.establish v. 建立，创办;使确认
He decided to leave school and establish his own company.(他决定离开学校，创办自己的公司。)
They have established diplomatic relations with that country.(他们已经同那个国家建立了外交关系。)
It is important for businessmen to establish credit.(对于商人来说，建立信誉十分重要。)
It is strange that they haven't established the cause of death so far.(很奇怪，他们至今还没有确定死因。)
There is no way to establish the identity of the man.(没有办法确认那个人的身份。)
7.signal n. 信号;暗号 v. 向…发信号
He didn't notice the traffic signals when he rode on the street.(他在街上骑车时，没有注意到交通信号。)
He sat in the room and waited for the signal to speak.(他坐在房间里，等候着让他说话的信号。)
The ship signaled its position hourly.(该船每小时用信号报告它的位置。)
He signaled me to enter the classroom.(他做手势叫我进教室。)
8.visual adj. 视觉的;栩栩如生的
vision n. 视力，视觉;想像力;幻想
visualize v. 设想，想像
Are you sure it is not your visual illusion?(你能肯定这不是你的视错觉吗?)
His stories are very visual.(他的故事写得很生动。)
If you don't tell me anything， it is difficult for me to visualize the scene.(如果你什么也不告诉我，要想像这个景象很困难。)
9.capable adj. 有能力的，有才能的
capability n. 能力
I always thought mother was very capable.(我一直认为妈妈很能干。)
With the knowledge and experience， we are capable of overcoming the difficulties.(有了这些知识和经验，我们能克服困难。)
Don't say anything capable of being misunderstood.(别说任何容易引起误解的话。)
They don't have the capability of solving practical problems.(他们没有解决实际问题的能力。)
Some jobs are beyond their capabilities.(有些工作超出了他们的能力。)
10.broadcast v; n. 广播，播音
broadcaster n. 播音员
broadcasting n. 广播，播音
broadcast可以做规则动词用(-ed)，也可以做不规则动词用。(过去时，过去分词与动词原形一致。)
The news was broadcast to the whole country.(这一消息对全国广播了。)
Did you watch the evening broadcast of world news yesterday?(你昨天有没有看晚上播送的国际新闻?)
He works with the Central People's Broadcasting Station.(他在中央人民广播电台工作。)
He suggested all television broadcasting should be prohibited.(他建议禁止播放所有的电视节目。)
His wife is a famous television broadcaster.(他妻子是著名的电视播音员。)
11.access n. 通道，入口;接近(进入)的机会
The door gives access to a living room. (从这个门可以进入起居室。)
I cannot find the access to this building. (我找不到进入这座大楼的通道。)
I demanded access to a telephone. (我要求有权使用电话。)
You can easily get access to him. (你很容易接近他。)
People in that mountain area had no access to education. (那个山区的人们过去没有受教育的机会。)
access 也可以做动词用，意思是“取，利用”，如：
The main problem was that they spent too much time accessing the information from the computer. (主要的问题是他们从计算机上存取信息花了太多的时间。)
12.unlimited adj. 无界限的;无限制的;无数的
limited adj. 有限的
limit n. 界限;限度 v. 限制
He longed for unlimited power. (他渴望有无限的权利。)
They stored unlimited amount of food when they heard there might be an earthquake. (他们听说有可能地震贮备了大量的食品。)
Time is too limited， we have to finish this work in a hurry. (时间太紧，我们得匆匆完成这项工作了。)
You have to realize we have limited sources of information. (你得意识到我们的消息来源很有限。)
The driver was fined for exceeding the speed limit. (司机由于超速被罚款。)
There is a limit to one's life， but no limit to serving the people. (人的生命是有限的，但为人民服务是无限的。)
We have to limit the expenses as much as possible. (我们必须尽量节省开支。)
The author will limit himself to a discussion of the first two chapters. (作者只准备讨论前两章的内容。)
13.demonstrate v. 说明，演示;论证，证实;示威游行
demonstration n. 论证;表演;示范;示威
The chemistry teacher demonstrated a very interesting experiment to the students. (化学老师给学生们演示了一个有趣的实验。)
How would you demonstrate that the earth goes around the sun? (你如何证明地球围绕太阳转?)
The workers demonstrated for pay increases. (工人们示威要求加薪。)
Would you please give us a demonstration? (你能给我们演示一下吗?)
His speech was a demonstration of his patriotism.(他的演讲是他一片爱国心的证明。)
Tomorrow they will go to the street to stage a demonstration. (明天，他们将上街示威。)
14.educational adj. 教育的
education n. 教育
educate v. 教育
There are many educational programs on TV. (电视播放很多教育节目。)
He received a good education when he was young. (他年轻时受过良好的教育。)
The education of young people is important to the future of a country. (年轻人的教育对于一个国家的未来来说十分重要。)
He was educated in the United States. (他是在美国受的教育。)
15.remote adj. 遥远的，偏僻的;(可能性)很小的
People came to Beijing from the remotest parts of our country. (人们从祖国最偏远的地方来到北京。)
He decided to go to a remote mountain area after graduation from the university. (他决定大学毕业后到偏僻的山区去。)
Can you imagine what will become the world in the remote future? (你能想像在遥远的将来世界会变成什么样吗?)
There is only a remote possibility to finish it in two days. (在两天内完成的可能性极小。)
Please give me the remote control. (请把遥控器给我。)
16.isolate v. 使隔离
isolation n. 隔离，孤立
He isolated himself from the outside world. (他把自己与外部世界隔绝了。)
The bridge sank and the village was isolated. (桥沉了，那个村子被隔绝了。)
He doesn't trust anyone and he lives in isolation. (他不信任任何人，过着孤独的生活。)
17.transportation n. 运输
Bike is a convenient means of transportation. (自行车是很方便的运输物品。)
They used both water and land transportation to send their goods. (他们用水陆两路运输工具。)
18.instruction n. 教学，指导;指示，说明
instruct v. 命令、指示
Read the doctor's instruction before taking the medicine. (服药前请看一看医嘱。)
We will carry out your instructions very soon. (我们将很快执行你的指示。)
He is giving instruction in English. (他在讲授英语。)
The teacher instructed her to do more oral practice. (老师指导她多做口头训练。)
I was instructed to take you to Beijing. (我受命带你去北京。)
19.risk v. 冒…的危险 n. 风险、冒险
He risked his life in saving the drowning child. (他冒着生命危险救那个溺水儿童。)
I don't want to risk my life to find out whether he told the truth. (我不想冒丧命的危险去查证他是否说了真话。)
It must be done at any risk. (不管冒什么危险，这事必须完成。)
He is unwilling to run the risk of losing his money. (他不愿意冒丧失金钱的危险。)
