According to the passage, ______ has become the driving force for the development of telephone system?A.information technologiesB.InternetC.PCD.convergence of telecommunications technologies

题目

According to the passage, ______ has become the driving force for the development of telephone system?

A.information technologies

B.Internet

C.PC

D.convergence of telecommunications technologies


相似考题

1.Telecommunications stand for devices and systems that transmit electronic or optical signals across long distances. Telecommunications enables people around the world to contact one another, to access information instantly, and to communicate from remote areas. Telecommunications usually involves a sender of information and one or more recipients linked by a technology, such as a telephone system, that transmits information from one place to another. Telecommunications enables people to sand and receive personal messages across town, between countries, and to and from outer space. It also provides the key medium for delivering news, data, information, and entertainment.Telecommunications devices convert different types of information, such as sound and video, into electronic or optical signals. Electronic signals typically travel along a medium such as copper wire or are carried over the air as radio waves. Optical signals typically travel along a medium such as strands of glass fibers. When a signal reaches its destination, the device on the receiving end converts the signal back into an understandable message, such as sound over a telephone, moving images on a television, or words and pictures on a computer screen.Telecommunications messages can be sent in a variety of ways and by a wide range of devices. The messages can be seat from one sender to a single receiver (point-to-point) or from one sender to many receivers (point-to-multipoint). Personal communications, such as a telephone conversation between two people or a facsimile (fax) message (see Facsimile Transmission), usually involve point-to-point transmission. Point-to-multipoint telecommunications, often called broadcasts, provide the basis for commercial radio and television programming.Telecommunications begin with messages that are converted into electronic or optical signals. Some signals, such as those that carry voice or music, are created in an analog or wave format, but may be converted into a digital or mathematical format for faster and more efficient transmission. The signals are then sent over a medium to a receiver, where they are decoded back into a form. that the person receiving the message can understand. There are a variety of ways to create and decode signals, and many different ways to transmit signals.Individual people, businesses, and governments use many different types of telecommunications systems. Some systems, such as the telephone system, use a network of cables, wires, and switching stations for point-to-point communication. Other systems, such as radio and television, broadcast radio signals over the air that can be received by anyone who has a device to receive them. Some systems make use of several types of media to complete a transmission. For example, a telephone call may travel by means of copper wire, fiber-optic cable, and radio waves as the call is sent from sender to receiver. All telecommunications systems are constantly evolving as telecommunications technology improves. Many recent improvements, for example, offer high-speed broadband connections that are needed to send multimedia information over the Internet.Personal computers have pushed the limits of the telephone system as more and more complex computer messages are being sent over telephone lines, and at rapidly increasing speeds. This need for speed has encouraged the development of digital transmission technology. The growing use of personal computers for telecommunications has increased the need for innovations in fiber-optic technology.Telecommunications and information technologies are merging and converging. This means that many of the devices now associated with only one function may evolve into more versatile equipment. This convergence is already happening in various fields. Some telephones and pagers are able to store not only phone numbers but also names and personal information aboA.Current development.B.Transmission of message.C.Computer networking.D.Government regulation.

2.【With the 4G telecommunications systems now starting to be deployed,people are looking towards the development of 5th generation or 5G technology services.Although the deployment of any wireless or cellular system take years,development of the 5G technology systems is being investigated.The new 5G technologies will need to be chosen developed and perfected to enable timely and reliable deployment. The new 5th generation,5G technology for cellular systems will probably start to come to fruition around 2020. The current status of the 5G technology for cellular systems is very much in the early development stages.Many companies are looking into the technologies that could be used to become part of the system.In addition to this,a number of universities have set up 5G research units focused on developing the technologies for 5G. In addition, the standards bodies,particularly 3GPP are aware of the development but are not actively planing the 5G systems yet.Many of the technologies to be used for 5G will start to appear in the systems used for 4G and then as the new 5G cellular system starts to formulate in a more concrete manner,they will be incorporated into the new 5G cellular system. The major issue with 5G technology is that there is such an enormously wide variation in the requirements:super fast downloads to small data requirements for IoT than any one system will not be able to meet these needs.Accordingly a layer approach is likely to be adopted.As one commentator stated:5G is not just a mobile technology.It is ubiquitous access to high & low data rate services.】 Based on the paragraph above,at present,5G technology for cellular systems ( ), many of the technologies to be used for 5G ( ) in the systems used for 4G,the major issue facing with 5G technology is ( ).A.has matured B.has setup its standards C.is very much in the early development stages D.is in use A.is being developed B.already appeared C.will not appear D.will start to appear A.super fast downloads B.small data requirements for IoT C.4G system has already satisfied these needs D.an enormously wide variation in the requirements

更多“According to the passage, ______ has become the driving force for the development of telephone system?A.information technologiesB.InternetC.PCD.convergence of telecommunications technologies”相关问题
  • 第1题:

    According to the passage, the oil industry might lead northern Norway to ______.

    A. the development of industry
    B. a growth in population
    C. the failure of the development programme
    D. the development of new towns

    答案:C
    解析:
    由第二段的"But the oil industry has already started to draw people from the south, and within a few years the whole northern policy could be in ruins. "可以推知C正确。

  • 第2题:

    When an ICMP redirect is received, which of the following options is the most appropriate to conclude?()

    • A、A routing table has changed
    • B、The IP address has changed
    • C、The system has become a gateway
    • D、A hacker is posing a threat to the system

    正确答案:A

  • 第3题:

    单选题
    According to the passage, the Concordia´s captain has been charged with causing the crash and______.
    A

    drug use

    B

    alcohol abuse

    C

    abandoning his post

    D

    setting fire


    正确答案: A
    解析:
    细节理解题。根据第三段最后一句话“The Concordia’s captain is currently on trial for causing a shipwreck and abandoning his ship.”可知:目前,船长正在因为造成船只倾覆以及弃船而受审,本题C选项abandoning his post(放弃岗位,擅离职守),与原文弃船意义一致。

  • 第4题:

    单选题
    According to the passage, the unemployment rate has been kept under limits because _____.
    A

    the number of the people in the work force slowly increases

    B

    very few people really lose their original jobs

    C

    less and less people are out finding new jobs

    D

    the government has taken strong measures to control the unemployment rate


    正确答案: A
    解析:
    由文章第二段第五句,“The unemployment rate…a weak economy.”,可知,失业率保持在一个较低的水平是由于人力资源的缓慢增加而导致的。工作的人数的增加少,相对失业的人也较少。A选项正是此意。B,C,D选项无关。

  • 第5题:

    单选题
    It is mentioned in the passage that one has to pay tax according to _____.
    A

    how much education one has received

    B

    whether one is single or married

    C

    how old one’s children are

    D

    where one lives


    正确答案: B
    解析:
    事实细节题。题干意为“文章提到,一个人应该根据什么来纳税?”由文章的第一段第一句可知,一个人缴纳税款是由很多因素决定的。“Whether the man is married”是其中的一项,其余选项在原文中均未提及。所以正确答案为B。

  • 第6题:

    单选题
    According to the passage, the Concordia’s captain has been charged with causing the crash and
    A

    drug use

    B

    alcohol abuse

    C

    abandoning his post

    D

    setting fire


    正确答案: B
    解析:

  • 第7题:

    单选题
    CT Telecommunications offers telephone customers the ______ selection of cellular phones available in the city.
    A

    wider

    B

    widest

    C

    more widely

    D

    most widely


    正确答案: D
    解析:
    句意:CT电信公司提供了各种各样的手机供城里的电话用户选择。根据选项及空格前的定冠词the,可知空格处应填入最高级。且空格处修饰后面的名词,因此选择形容词的最高级。available可得到的,可利用的。

  • 第8题:

    单选题
    According to this passage, which of the following statements is TRUE?
    A

    Company workers started to dress down about twenty years ago.

    B

    Dress-down has become an everyday phenomenon since the early 1990s.

    C

    “Dress-down Friday” was first given as a favor from employers.

    D

    Many workers want to wear casual clothes to impress people.


    正确答案: B
    解析:
    信息题。A选项“公司员工20年前就开始穿非正式的服装”和原文第二段“In the early 1990s”不符;B选项“自从1990年代早期,穿休闲服饰就已经成为日常的现象”,而原文意为1990年代早期,穿休闲服饰的风潮刚刚兴起,与此不符;C选项“穿休闲服装最初是作为对员工的一种优待而推行的”和原文“What started out as an extra one-day-a-week benefit for employees . . .”意义相符,答案为C;D选项“很多员工喜欢穿休闲服饰是为了给他人留下深刻的印象”未在原文提及。

  • 第9题:

    单选题
    According to the passage, which of the following statements is true?
    A

    Transporting goods and people is the most important technology in the history of mankind.

    B

    Technology in transporting goods and people has changed human conditions more than anything else.

    C

    Technology in spreading information has changed human conditions more than transportation technology.

    D

    Technology in spreading information can’t change the economic development of society.


    正确答案: A
    解析:
    文章首段指出“没有任何科技革命像交通方面的科技革命那样显著地改变了人类的生活条件…然而长距离传送想法和信息的科技可以说带来了更多的改变…”,由此可知信息传播科技在改变生活条件方面比运输科技取得了更大的成就。故选项C符合文意。

  • 第10题:

    单选题
    Which of the following situations is most dangerous according to the passage?
    A

    Adults giving a lift to teenagers on the highway after 10 p.m.

    B

    A teenager driving after midnight with passengers in the car.

    C

    Adults driving with three or more teenage passengers late at night.

    D

    A teenager getting a lift from a stranger on the highway at midnight.


    正确答案: D
    解析:
    细节推断题。题目要求找出以下情况最危险的选项。文章第二段首句提到,晚上10点后,少年司机驾车,致命事故发生频率高得惊人。特别是半夜以后更高。B项“少年司机半夜后驾车而且载有乘客最危险”与文章所述内容吻合。故选B项。

  • 第11题:

    单选题
    When an ICMP redirect is received, which of the following options is the most appropriate to conclude?()
    A

    A routing table has changed

    B

    The IP address has changed

    C

    The system has become a gateway

    D

    A hacker is posing a threat to the system


    正确答案: B
    解析: 暂无解析

  • 第12题:

    单选题
    According to the passage, which of the following can be concluded form the passage about this couple?
    A

    They will live happily ever after.

    B

    Their marriage is not harmonious.

    C

    The couple will adopt children.

    D

    They will become schoolteachers.


    正确答案: A
    解析:
    从文章首段可看出Jerome与妻子品位不同,并且不喜欢她来干涉他;接下来一段描述了Jerome妻子长得比较粗俗;而最后一段提到Jerome是一个安静的教师,并且比妻子小10岁,可见他们两人差距很大,因此B项“他们的婚姻并不和谐”符合文章内容。

  • 第13题:

    According to this passage, which of the following is TRUE?___________

    A.Company workers started to dress down about twenty years ago
    B.Dress-down has become an everyday phenomenon since the early 1990s
    C."Dress-down Friday" was first given as a favor from employers
    D.Many workers want to wear casual clothes to impress people

    答案:C
    解析:
    由文章第二段第三句话可知,周五穿便装是作为一群员工的喜爱而首次出现的。故选C。

  • 第14题:

    单选题
    According to the passage, all of these are true EXCEPT ______.
    A

    Purple loosestrife propagates through an underground system.

    B

    Purple loosestrife has even affected the survival of fish.

    C

    Purple loosestrife is best eradicated through controlled burning.

    D

    Purple loosestrife is sometimes found in urban areas.

    E

    Purple loosestrife is found in the wetlands of most states.


    正确答案: E
    解析:
    注意题干要求选出表述错误的选项。根据第三段第二句“its rootstock lies beneath the surface and can reproduce from there”可知,A项是正确的;第二段第二句提到“purple loosestrife”已经入侵并破坏了鱼类的产卵区,B项正确;第三段第二句表明“purple loosestrife is impervious (不受影响的) to burning”,因此C项不符合题意;第二段倒数第二句指出,“In urban areas, it is blocking pipes and drainage canals”,D项正确;第二段最后一句表明E项也是正确的,因此选择C。

  • 第15题:

    单选题
    According to the passage, which of the following statements is TRUE?
    A

    Buy Nothing Day has become popular in the United States.

    B

    Restaurants have a tradition of donating food on holidays.

    C

    Girl shops are expected to be closed on Buy Nothing Day.

    D

    Children like the idea of Buy Nothing Day best.


    正确答案: D
    解析:
    判断推理题。题目询问“根据文章,下列哪项说法是正确的?”从文章的第二段第四句“Now people all over the United States celebrate Buy Nothing Day”可知,现在美国人都在庆祝“不购物日”。正确答案为A。

  • 第16题:

    单选题
    According to the passage, which of the following has changed the most in the last 500 years?
    A

    Food

    B

    Chocolate drinks

    C

    Potato

    D

    Coffee


    正确答案: D
    解析:

  • 第17题:

    问答题
    Practice 2  The miracle silicon chip represents a development in the technology of mankind that over the past few years has acquired the force and significance associated with the development of hand tools or the discovery of the steam engine. Just as the Industrial Revolution took over an immense range of tasks from men’ s muscles and enormously expanded productivity, so the microcomputer is rapidly assuming huge burdens of tedious work from the human brain and thereby expanding the mind’s capacities in ways that man has only begun to grasp. With the chip, remarkable achievements of memory and execution become possible in everything from farms to banks to corporate offices.

    正确答案:
    【参考译文】
    神奇的硅片代表了(体现了)人类技术的进步,近年来这种技术进步获得的发展动力和重要性与手工工具和蒸汽机的发明相关。正如工业(产业)革命使人类摆脱了各种各样的体力劳动并极大地提高了生产效率一样,微型计算机正在快速地代替人脑完成繁重而乏味的工作,因此拓宽了大脑的能力,而拓宽的方式人类刚刚开始领会。利用硅片,在任何领域都有可能取得信息储存和执行方面的杰出成就,不论是农场、银行还是公司的办公室。
    解析: 暂无解析

  • 第18题:

    单选题
    According to the passage, as the Sun continues to age, what color is it likely to become?
    A

    Yellow.

    B

    Violet.

    C

    Red.

    D

    White.


    正确答案: A
    解析:

  • 第19题:

    单选题
    According to the passage people who have experienced ups and downs may become _____.
    A

    nervous when faced with difficulties

    B

    physically and mentally strained

    C

    more capable of Coping with adversity

    D

    indifferent, toward what happens to them


    正确答案: C
    解析:
    推论题。文章末段说明经历了各种压力的人,身心更有活力,而在一成不变的状况中的人,则会身心疲惫。C项为同义转述。

  • 第20题:

    单选题
    According to Excerpt 6, in the future_____.
    A

    it may be hard to predict the development of the Internet

    B

    the Internet will become an indispensable superhighway

    C

    the Internet will be applied more

    D

    the Internet will combine cable stations


    正确答案: C
    解析:
    从Excerpt 6可知,未来随着科学技术的发展,网络会变得愈加成熟,而且还中提到了网络还可以和电话公司、有线电视台和其他信息系统连接起来给人们提供更方便的服务,因此C项是正确答案。

  • 第21题:

    单选题
    According to the passage, driving can be safe if ______.
    A

    you are patient

    B

    you obey all the traffic rules

    C

    you don’t cut another car off

    D

    you wait in line at a red light


    正确答案: A
    解析:
    事实细节题。由关键词safe定位最后一段,作者提到安全驾驶的前提是遵守交通规则,故B项正确。A项“要耐心”原文没有提及。C项 “不要从别的司机面前横过”,D项 “遇到红灯时要排队等候”均不够全面。

  • 第22题:

    单选题
    According to the passage, which of the following is true of the last hundred years?
    A

    Fossil fuels were burned for the first time.

    B

    Greater amounts of land were cleared than at any time before.

    C

    The average temperature at the Earth’s surface has become 2℃ cooler.

    D

    The amount of carbon dioxide in the atmosphere has increased measurably.


    正确答案: D
    解析:
    文中第二段第二句表明,过去100年间,矿物燃料的燃烧和森林的砍伐使大气中二氧化碳的含量增加了大约15%,而且我们不断地向大气中排放二氧化碳,由此可以推断,A、B两项表述均不准确;由于大气中的二氧化碳在不断增加,因此地表温度只会升高,而不是降低,C项错误;因此只有D项符合文章大意。

  • 第23题:

    单选题
    According to the passage, which of the following has changed the most in the last 500 years?
    A

    Food.

    B

    Chocolate.

    C

    Potato

    D

    Coffee.


    正确答案: A
    解析:
    推理题。文章第一句“In the last 500 years, nothing about people not their clothes,ideas,or languages—has changed as much as what they eat”中,“what they eat”即指“food”。