In the 1970s, only about 500 people used e-mail to do projects at work. Then, in the 1980s, the first personal computers arrived. For the first time, people could have computers at home. Then came the Internet. Soon e-mail became a popular way to communicate. Today, over one billion people use it.
Tomlinson is sorry about one thing—spam. Most of it is advertising that tries to sell something. As much as 70 percent of each day’s 180 billion e-mail messages is spam. As the number of e-mail users grows, spam is becoming more and more of a problem.
Pitifully, Tomlinson never made any money from e-mail and most people don’t even know his name. However, Thanks to this unknown hero, people all over the world can communicate with each other in seconds.
28．What can we learn about Tomlinson’s first e-mail?
A．It had several files attached. B．It was just a test message.
C．It was an e-mail usage warning. D．It came from one of his co-workers.
29．what happened before e-mail?
A．There wasn’t the @symbol on the keyboard.
B．Personal computers had been networked.
C．Not many people used the @ symbol.
D．Computers had been used at home.
30．What did the public think of e-mail in the 1970s？
A．They were against it．B．They thought highly of it.
C．They paid little attention to it. D．They had high expectations for it.
31．What does “spam” probably refer to?
A．Unfinished e-mail. B．Unknown e-mail.
C．Unwanted e-mail. D．Unfamiliar e-mail.
D
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