[简答题]Internet

[简答题]Internet

[单项选择]
Internet shopping is a new way of shopping. Nowadays, you can shop for just about anything from your armchair. All you need is a computer which is linked to the Internet. Shopping on the Internet is becoming increasingly popular. In the United States, people spent over US $ 2.5 billion on Internet shopping in 1998. This figure is expected to reach US $ 11 billion by the year 2004.
People can shop for a variety of products on the Internet. Physical products include items such as books, CDs, clothes and food. These types of products are the most common purchases through the Internet. You can also buy information products such as on-line news or magazine stories, or you can download computer software through the Internet. Services such as booking airline tickets, reserving hotels or renting ears are also available on the Internet. You can also go shopping on the Internet for entertainment services and take part in on-l
A. the most popular products on the Internet
B. not yet available on the Internet
C. free to download through the Internet
D. information products available on the Internet

[单项选择]
Internet use appears to cause a drop in psychological health, according to research at Carnegie Mellon University.
Even people who spent just a few hours a week on the Internet experienced more bad feelings and loneliness than those who was online less frequently, the two-year study showed. Researchers are puzzling over the results, which were completely contrary to their expectations. They expected that the Net would prove socially healthier than television, since the Net allows users to choose their information and to commnunicate with others.
The fact that Internet use reduces time available for family and friends may account for the drop in psychological health, researchers hypothesized (推测). Faceless, bodiless "virtual" communication may be less psychologically satisfying than actual conversation, and the relationships formed through it may be shallower. Another possibility is that exposure to the wider world
A. People spend more time on the Internet now.
B. People spend less time with their families and friends now.
C. The Net proves socially healthier than television.
D. Internet use may cause a drop in psychological healt

[单项选择]Internet/Internet提供的服务主要包括（）。
A. DNS服务、E-mail服务和FTP服务
B. MS SQL Server查询服务、DNS服务和网络电视会议服务
C. Web服务、IP电话服务和公共信息资源在线查询服务
D. DHCP服务、Web服务和FTP服务

[名词解释]因特网（Internet）

[简答题]请回答以下关于Internet的问题。
Internet电子邮件的标准是什么

[简答题]请回答以下关于Internet的问题。
Internet的服务有哪几种