有关GPRS的叙述，下列何者正确？（）

A:上网速度约与56k数据机相同 B:优点是上网免费 C:是一种整合电路交换的无线通信技术 D:是一种整合分封交换的无线通信技术

安装了56k的Modem，则（）。

A:上网速度一定能达到56kbps B:上网速度一般大于56kbps C:上网速度与Modem速率无关 D:上网速度一般小于56kbps

56KModem是普通模拟电话线上的传播速度，具体为（）。

A:上下载均为56K B:上载33.6K，下载56K C:上载56K，下载33.6K D:上下载仍为33.6K

Google’s Gmail system, which serves millions of customers around the world, shut down yesterday. Twitter, the micro-blogging service used by tens of millions of people, went off-line last month. It blamed the trouble on a malicious programmer in Russia who was trying to shut down the account of a user in neighboring Georgia. It is astonishing the local actions of a small number of programmers call bring an entire Internet service to its knees, but that have been the case.
The Internet as it is set up now operates at three levels. The first is the servers that store data and content for use by customers. Google and other large companies keep massive server farms. These are well-protected from outside programmers by sophisticated software, but clearly that does not always work. The protection devices may fail more and more often as hackers get more skillful.
The second part of the Interact is the "pipes" that carry data, video, e-mail messages, and text of websites from companies such as Google, Yahoo!, and Twirler, that make up Interact content and services to customers. Some of these" pipe" providers, specifically telecom and cable companies, are already complaining that the amount of data that they have to move is rising too rapidly for them to accommodate. Video files, which are particularly large, have posed significant problems to cable companies.
The last piece of the Interact is the end user, the companies and consumers who have tire PCs. Perversely, these PCs are also the tools by which hackers build malicious code that they send out to compromise the effectiveness of the servers to destroy the data transport system which is at the core of the worldwide web’s operations.
The problem of online outages is as old as the internet itself, AOL’s dial-up 56k service would go down regularly in the mid-1990s. The company did not have enough modems to keep up with demand.
The Internet for the last decade may not be the Internet for tire future. The prophylactic software that was meant to protect the web is less effective. Like anything else that is used regularly whether it is a car, a light bulb, or a PC, the Internet is going to have to be upgraded more often now. It won’t work every hour of every day anymore.
According to the passage, why the PCs can he the tools to destroy the internet system

A:Because there are too many PCs while the internet system resources are limited. B:Because the PCs are weak in receiving data which makes the internet is overcrowded with data. C:Because hackers can use the PCs to send harmful code to reduce the effectiveness of servers. D:Because the worldwide web’s transportation can be broken down by PCs.

Google’s Gmail system, which serves millions of customers around the world, shut down yesterday. Twitter, the micro-blogging service used by tens of millions of people, went off-line last month. It blamed the trouble on a malicious programmer in Russia who was trying to shut down the account of a user in neighboring Georgia. It is astonishing the local actions of a small number of programmers call bring an entire Internet service to its knees, but that have been the case.
The Internet as it is set up now operates at three levels. The first is the servers that store data and content for use by customers. Google and other large companies keep massive server farms. These are well-protected from outside programmers by sophisticated software, but clearly that does not always work. The protection devices may fail more and more often as hackers get more skillful.
The second part of the Interact is the "pipes" that carry data, video, e-mail messages, and text of websites from companies such as Google, Yahoo!, and Twirler, that make up Interact content and services to customers. Some of these" pipe" providers, specifically telecom and cable companies, are already complaining that the amount of data that they have to move is rising too rapidly for them to accommodate. Video files, which are particularly large, have posed significant problems to cable companies.
The last piece of the Interact is the end user, the companies and consumers who have tire PCs. Perversely, these PCs are also the tools by which hackers build malicious code that they send out to compromise the effectiveness of the servers to destroy the data transport system which is at the core of the worldwide web’s operations.
The problem of online outages is as old as the internet itself, AOL’s dial-up 56k service would go down regularly in the mid-1990s. The company did not have enough modems to keep up with demand.
The Internet for the last decade may not be the Internet for tire future. The prophylactic software that was meant to protect the web is less effective. Like anything else that is used regularly whether it is a car, a light bulb, or a PC, the Internet is going to have to be upgraded more often now. It won’t work every hour of every day anymore.
What can NOT be inferred from the passage

A:Usually, the demand for interact is greater than that can be provided. B:Internet, like a car, needs to be upgraded to meet the higher demand on it. C:It is common that the intemet won’t work properly now and then. D:There is no great demand of interact access in 1950s in the U. S.

Google’s Gmail system, which serves millions of customers around the world, shut down yesterday. Twitter, the micro - blogging service used by tens of millions of people, went off - line last month. It blamed the trouble on a malicious programmer in Russia who was trying to shut down the account of a user in neighboring Georgia. It is astonishing the local actions of a small number of programmers can bring an entire Interact service to its knees, but that have been the case.
The Internet as it is set up now operates at three levels. The first is the servers that store data and content for use by customers. Google and other large companies keep massive server farms. These are well -protected from outside programmers by sophisticated software, but clearly that does not always work. The protection devices may fail more and more often as hackers get more skillful.
The second part of the Internet is the" pipes" that carry data, video, e - mail messages, and text of websites from companies such as Google, Yahoo !, and Twitter, that make up Internet content and services to customers. Some of these" pipe" providers, specifically telecom and cable companies, are already complaining that the amount of data that they have to move is rising too rapidly for them to accommodate. Video files, which aye particularly large, have posed significant problems to cable companies.
The last piece of the Internet is the end user, the companies and consumers who have the PCs. Perversely, these PCs are also the tools by which hackers build malicious code that they send out to compromise the effectiveness of the servers to destroy the data transport system which is at the core of the worldwide web’s operations.
The problem of online outages is as old as the internet itself, AOL’s dial - up 56k service would go down regularly in the mid - 1990s. The company did not have enough modems to keep up with demand.
The Internet for the last decade may not be the Internet for the future. The prophylactic software that was meant to protect the web is less effective. Like anything else that is used regularly whether it is a car, a light bulb, or a PC, the Internet is going to have to be upgraded more often now. It won’t work every hour of every day anymore.
What is the main purpose of the first paragraph

A:To critize that Google and Twitter provide poor service. B:To remind people of the danger in Using emails. C:To present a fact that the internet is not stable all the time. D:To display the hacker’s skills in damaging the internet.

Google’s Gmail system, which serves millions of customers around the world, shut down yesterday. Twitter, the micro - blogging service used by tens of millions of people, went off - line last month. It blamed the trouble on a malicious programmer in Russia who was trying to shut down the account of a user in neighboring Georgia. It is astonishing the local actions of a small number of programmers can bring an entire Interact service to its knees, but that have been the case.
The Internet as it is set up now operates at three levels. The first is the servers that store data and content for use by customers. Google and other large companies keep massive server farms. These are well -protected from outside programmers by sophisticated software, but clearly that does not always work. The protection devices may fail more and more often as hackers get more skillful.
The second part of the Internet is the" pipes" that carry data, video, e - mail messages, and text of websites from companies such as Google, Yahoo !, and Twitter, that make up Internet content and services to customers. Some of these" pipe" providers, specifically telecom and cable companies, are already complaining that the amount of data that they have to move is rising too rapidly for them to accommodate. Video files, which aye particularly large, have posed significant problems to cable companies.
The last piece of the Internet is the end user, the companies and consumers who have the PCs. Perversely, these PCs are also the tools by which hackers build malicious code that they send out to compromise the effectiveness of the servers to destroy the data transport system which is at the core of the worldwide web’s operations.
The problem of online outages is as old as the internet itself, AOL’s dial - up 56k service would go down regularly in the mid - 1990s. The company did not have enough modems to keep up with demand.
The Internet for the last decade may not be the Internet for the future. The prophylactic software that was meant to protect the web is less effective. Like anything else that is used regularly whether it is a car, a light bulb, or a PC, the Internet is going to have to be upgraded more often now. It won’t work every hour of every day anymore.
According to the passage, which description about internet is fight

A:The internet operates at three levels, all of which are servers kept by internet operators. B:The servers are so well protected that they are seldom hit by hackers. C:The demand for improving protection devices is urgent as hackers get more and more skillful. D:Google and Twitter keep large farms for customers.

Google’s Gmail system, which serves millions of customers around the world, shut down yesterday. Twitter, the micro - blogging service used by tens of millions of people, went off - line last month. It blamed the trouble on a malicious programmer in Russia who was trying to shut down the account of a user in neighboring Georgia. It is astonishing the local actions of a small number of programmers can bring an entire Interact service to its knees, but that have been the case.
The Internet as it is set up now operates at three levels. The first is the servers that store data and content for use by customers. Google and other large companies keep massive server farms. These are well -protected from outside programmers by sophisticated software, but clearly that does not always work. The protection devices may fail more and more often as hackers get more skillful.
The second part of the Internet is the" pipes" that carry data, video, e - mail messages, and text of websites from companies such as Google, Yahoo !, and Twitter, that make up Internet content and services to customers. Some of these" pipe" providers, specifically telecom and cable companies, are already complaining that the amount of data that they have to move is rising too rapidly for them to accommodate. Video files, which aye particularly large, have posed significant problems to cable companies.
The last piece of the Internet is the end user, the companies and consumers who have the PCs. Perversely, these PCs are also the tools by which hackers build malicious code that they send out to compromise the effectiveness of the servers to destroy the data transport system which is at the core of the worldwide web’s operations.
The problem of online outages is as old as the internet itself, AOL’s dial - up 56k service would go down regularly in the mid - 1990s. The company did not have enough modems to keep up with demand.
The Internet for the last decade may not be the Internet for the future. The prophylactic software that was meant to protect the web is less effective. Like anything else that is used regularly whether it is a car, a light bulb, or a PC, the Internet is going to have to be upgraded more often now. It won’t work every hour of every day anymore.
According to the passage, what is main problem that cable companies face now7

A:There are more and more cable companies to compete in the internet cooperation market. B:The amount of data they kave to move is rising while their accomadation is not increased so quickly. C:The videos files damage the pipes that are used to transporting the information. D:Telecom and cable companies have too much content to provide that they need to enlarge there pipes.

Google’s Gmail system, which serves millions of customers around the world, shut down yesterday. Twitter, the micro - blogging service used by tens of millions of people, went off - line last month. It blamed the trouble on a malicious programmer in Russia who was trying to shut down the account of a user in neighboring Georgia. It is astonishing the local actions of a small number of programmers can bring an entire Interact service to its knees, but that have been the case.
The Internet as it is set up now operates at three levels. The first is the servers that store data and content for use by customers. Google and other large companies keep massive server farms. These are well -protected from outside programmers by sophisticated software, but clearly that does not always work. The protection devices may fail more and more often as hackers get more skillful.
The second part of the Internet is the" pipes" that carry data, video, e - mail messages, and text of websites from companies such as Google, Yahoo !, and Twitter, that make up Internet content and services to customers. Some of these" pipe" providers, specifically telecom and cable companies, are already complaining that the amount of data that they have to move is rising too rapidly for them to accommodate. Video files, which aye particularly large, have posed significant problems to cable companies.
The last piece of the Internet is the end user, the companies and consumers who have the PCs. Perversely, these PCs are also the tools by which hackers build malicious code that they send out to compromise the effectiveness of the servers to destroy the data transport system which is at the core of the worldwide web’s operations.
The problem of online outages is as old as the internet itself, AOL’s dial - up 56k service would go down regularly in the mid - 1990s. The company did not have enough modems to keep up with demand.
The Internet for the last decade may not be the Internet for the future. The prophylactic software that was meant to protect the web is less effective. Like anything else that is used regularly whether it is a car, a light bulb, or a PC, the Internet is going to have to be upgraded more often now. It won’t work every hour of every day anymore.
What can NOT be inferred from the passage

A:Usually, the demand for internet is greater than that can be provided. B:Internet, like a ear, needs to be upgraded to meet the higher demand on it. C:It is common that the internet won’t work properly now and then. D:There is no great demand of internet acess in 1950s in the U. S.

第八题、 本套题共有2小题在考生文件夹下，打开文档DOC1.doc，操作完成后以原文件名保存文档。 （1）将全文中的“数据传送”一词改为“数据传输”，标题“56K Modem”设 置为英文字体 Tahoma、二号、居中；正文部分的汉字设置为宋体，字号 为五号，英文设置为Times New Roman字体，将标题段的段后间距设置为 18磅。 （2）正文各段的段后间距设置为8磅。各段首字下沉2行，距正文为 0.2厘米， 存储为文档DOC1.doc。