题目内容
Unsolicited e-mail is called _______.
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_______ messaging is the process of sending short electronic messages using a wireless network.
A(n) _______ publishes short sentences that only take a few seconds to write, rather than long stories or posts.
The most popular microblogging site is _______.
A(n) _______ is a website specially designed to allow visitors to use their browser to add, edit, or delete the site’s content.
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