单选题
一个HTML文件的起始标记为（）。
A
B
</p><p><span>C</span><html></p><p><span>D</span><meta><meta /></p></div><div class="info"><h3 class="title">正确答案</h3><script>ai2();</script><div class="text"><img alt="来源：www.examk.com" 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" /></div></div><div class="info"><h3 class="title">答案解析</h3><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></div><div class="box"><div class="hd"><div class="title title--blue"><i class="icon"></i><span>相似试题</span></div></div><ul class="qlist"><li><p class="text">在Outlook中可以借助（）的方式传送一个文件。</p><p class="ft"><span class="mode">单选题</span><a href="/p/3242126849.html" class="btn-outline">查看答案</a></p></li><li><p class="text">在Outlook中，通常借助（）来传送一个文件。</p><p class="ft"><span class="mode">单选题</span><a href="/p/3657017124.html" class="btn-outline">查看答案</a></p></li><li><p class="text">某Internet主页的URL地址为http：//www.test.com.cn／product／index.html，该地址的域名是（）。</p><p class="ft"><span class="mode">单选题</span><a href="/p/954835113.html" 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