（单选题）

一个HTML文件的起始标记为（）。

B</p><p><span>C</span><html></p><p><span>D</span><meta><meta /></p></div><div class="info"><div class="title"><h4><i class="ax-iconfont ax-icon-check-o-gap"> </i> 正确答案</h4></div><div class="text"><img alt="来源：www.examk.com" src="data:image/png;base64,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" /></div></div><div class="info"><div class="title"><h4><i class="ax-iconfont ax-icon-question-o"> </i> 答案解析</h4></div><div class="text"> 本题考查应试者网页文件方面的基本知识。<br /> HTML文档是普通文本(ASCII)文件，它可以用任意编缉器生成。每个HTML文档应该包含一些标准HTML标记，每个文档都包含头head和正文body text两部分。头中含有标题title，正文中含有实际构成段落、列表和其他元素的文本。浏览器需要具体的信息是因为它们都是根据HTML和SGML说明编程的。<br /> ＜html＞、＜head＞、＜title＞和＜body＞标记是HTML文档中必须有的元素(和它们相应的结束标记)。其中＜html＞是一个HTML的起始标记，它的作用是让浏览器知道这是HTML文件。 </div></div><script>rewardHtml()</script></div><div class="pre ax-align-center" id="qa-pre"><span class="ax-loading"><i></i></span></div><div class="box"><div class="head"><h2 class="title"><i class="ax-iconfont ax-icon-compass"></i> 相似试题</h2></div><ul class="list list-1"><li><p class="mode">（单选题）</p><p class="title">在Outlook中可以借助（）的方式传送一个文件。</p><p class="more"><a target="_blank" href="/p/3242126849.html" class="ax-btn ax-primary ax-line">答案解析</a></p></li><li><p class="mode">（单选题）</p><p class="title">在Outlook中，通常借助（）来传送一个文件。</p><p class="more"><a target="_blank" 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