| It is important | for him | to know these laws | Йому важливо знати ці закони. |
| It is necessary | to revise this rule . | Йому необхідно повторити це правило. | |
| It is essential | to be in time for the exam. | Головне, щоб він не запізнився на екзамен. |
І. Decide which of these statements are true and which are false.
1. Cell phones emit big amount of electromagnetic radiation. 2. Radio-frequency radiation has the ability to destroy human tissue. 3. Scientists still discuss the possible harm of cell phones effect. 4. Children may use cell phones without any restriction.
ІІ. Answer the following questions.
1. How many cell phone users were there in the USA in 2001? 2. What illnesses may be caused by excessive use of cell phones? 3. What are the forms of ionizing radiation? 4. What organ is particularly vulnerable to the effect of heat?
Text 12. The Internet
Active Vocabulary:
| global | всесвітній | feeds | забезпечення |
| interconnected | з`єднаний | to enable | робити можливим |
| network | мережа | instant | миттєвий |
| пошта | message | повідомлення | |
| to reshape | надавати нової форми | forum | засідання, конференція |
| Web site | вузол мережі | access | доступ |
| blog | щоденник у мережі | data | дані |
| software | програмне забезпечення | hardware | деталі комп`ютера |
The Internet is a global system of interconnected computer networks linked by a broad range of electronic and optical networking technologies. The Internet carries a lot of information resources and services, especially the inter-linked hypertext documents of the World Wide Web (WWW) and the infrastructure to support electronic mail.
Most traditional communications media, such as telephone and television services, are reshaped using the technologies of the Internet, giving rise to services such as Voice over Internet Protocol (VoIP) and IPTV. Newspaper publishing has been reshaped into Web sites, blogging, and web feeds. The Internet has enabled the creation of new forms of human communications through instant messaging, Internet forums, and social networking sites.
The Internet was created in the 1960s when the USA funded research projects of its military agencies decided to build forceful computer networks. Now the Internet has no centralized governance in either technological realization or policies for access and usage.
The terms Internet and World Wide Web are often used in everyday speech without much difference. However, the Internet and the World Wide Web are not one and the same. The Internet is a global data communications system. It is a hardware and software infrastructure that provides connectivity between computers. In contrast, the Web is one of the services communicated via the Internet. It is a collection of interconnected documents and other resources, linked by hyperlinks and URLs.