多高的问题
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<h1>Recent <samp>Course</samp></h1>
<dl>
<dt>Hyper Text Markup Language</dt>
<dd>
<img src="http://img1.sycdn.imooc.com/climg//582e61290001787900500051.png" alt="">
<div class="fixed">1</div>
</dd>
<dd>HTML is the standard markup language used to create web pages and its elements form the building blocks
of all websites.</dd>
</dl>
<dl>
<dt>Cascading Style Sheets</dt>
<dd>
<img src="http://img1.sycdn.imooc.com/climg//582e61290001787900500051.png" alt="">
<div class="fixed">2</div>
</dd>
<dd>Cascading Style Sheets (CSS) is a simple mechanism for adding style (e.g., fonts, colors, spacing) to
Web documents.</dd>
</dl>
<dl>
<dt>JavaScript</dt>
<dd>
<img src="http://img1.sycdn.imooc.com/climg//582e61290001787900500051.png" alt="">
<div class="fixed">3</div>
</dd>
<dd>JavaScript is a high-level, dynamic, untyped, and interpreted programming language.</dd>
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<dt>AngularJS</dt>
<dd>
<img src="http://img1.sycdn.imooc.com/climg//582e61290001787900500051.png" alt="">
<div class="fixed">4</div>
</dd>
<dd>AngularJS is an open-source web application framework mainly maintained by Google and by a community of
individuals and...</dd>
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<h1>Welcome to <samp>Massive Open Online Course!</samp></h1>
<p>We provide the latest knowledge to help you cope with the changing world!</p>
<img src="http://img1.sycdn.imooc.com/climg//582e61180001ede703300130.jpg">
<p>We hope that all the students who love the Internet can be more convenient access to learning resources,
using the Internet thinking to change our learning.</p>
<p>Focus on IT skills education MOOC, consistent with the development trend of the Internet down to earth's
MOOC. We are free, we only teach useful, we concentrate on education.</p>
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正在回答
同学你好，代码实现效果很棒。关于标题‘多高的问题’是什么意思呢？老师不太明白，建议描述具体一些。
另外，目前正在做问答和笔记功能优化，如果在提问或者记笔记的时候，提示"内容正在加急审核中，请耐心等待"时，请不要重复提交，等待审核通过即可。
继续加油，祝学习愉快~
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