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<pre id="msgArea" style="padding: 4px; height: 200px; overflow: auto; border: 1px solid #aaa;"><p class="comment">[<span style="color:#f48">管理员消息</span>]<b>老师：</b>同学们怎么想呢？</p></pre>
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    '大概明白了！',
    '请问是不是还有另外一种解法？',
    '哇这题太难了我快晕了！🤯🤯🤯',
    '考试要是考这题我算是完了。。。',
    '大概…懂了…其实还是不太明白。',
    '啊…老师请问可以再讲一次嘛？',
    '送出🚀x1000<br/>[<span style="color:red">用户已被禁言</span>]',
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