【正确答案】From the following pictures we know there are three different types of communication instruments. They have greatly changed the ways people communicated with each other and at the same time, also changed the way of our life.
In the first picture, people in the past and even at present still communicated by mail. We send letters to friends who live in the far-away places, sharing sadness and happiness, or sharing useful information with them. People in different countries are no longer insolated; on the other hand, they are connected by this communication instruments.
With the fantastic development of new technologies, the next two types of communication instruments as shown in the pictures are introduced into our life. While mail takes a long time to arrive, telephones enable us to get through each other in seconds. Now millions of people send E-mails to each other with computers. The ways of communication are becoming more and more convenient. Our earth seems to become a small village.