In addition to information, the Internet also offers one of the greatest inventions in communications, electronic mail, or e-mail for short. E-mail is the brainchild of a shrewd（精明的）man named Ray Tomlison. He developed the program and sent himself the first e-mail in 1974. He isn’t sure, but he thinks his first message was QWERTYUIOP （ the top row of letters on a key-board）. As a result of Tomlinson’s invention of e-mail, the way in which the world communicates has changed.

　　Thanks to e-mail, you can communicate with a student in London and find out how his weather experiment is going. E-mail has also changed the speed with which we exchange information. In minutes, you can contact another person who shares your love of kites or stamps. Your aunt and uncle can send you pictures of their new puppy without ever leaving their home. If you are sick and can’t attend school, your teacher can e-mail you the assignments you have missed. You can even send e-mail to a grasshopper expert and ask questions for a research paper.

　　However, there is one big disadvantage when you use e-mail. Unlike a letter you send through the mail, e-mail is NOT private. It can be reviewed by anyone with access to your receiver’s computer. Your receiver could also forward it to other people—so be careful. Do not say anything in an e-mail that you wouldn’t say in front of crowd!

　　The internet

　　The internet offers information to us. The internet enables us to （1）

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