Ray Tomlinson is famous as "the father of e-mail", He was born in New York in 1942. When he grew up, he attende conllege at Rensselaer Polytechnic Insitute. There he took part in a program with IBM. In the past, people had to write a letter and mail it at the post office. It would take a few days or weeks to receive a letter. In 1971, Ray was ordered to find an expression of the e-mail address. He wrote a program that allowed messages to be exchanged between different computers. The first e-mail system was born. From then on, messges could be sent electronically . This invention has made a great difference in people’s life. E-mail has been widely used today. Ray died at 74. Thank Ray for inventing the e-mail to make our daily life become more convenient. 1. Who is Ray Tomlinson?