关于html:第-9-题XHTML-和-HTML-有什么区别

次要是体现在代码标准上，XHTML 标准会更加严格

正确示范

<b><i>This text is bold and italic</i></b>

谬误示范

<b><i>This text is bold and italic</b></i>

正确示范

<p>This is a paragraph</p><p>This is another paragraph</p>A break: <br />A horizontal rule: <hr />An image: <img src="happy.gif" alt="Happy face" />

谬误示范

<p>This is a paragraph<p>This is another paragraphA break: <br>A horizontal rule: <hr>An image: <img src="happy.gif" alt="Happy face">

正确示范

<body>    <p>This is a paragraph</p></body>

谬误示范

<BODY>    <P>This is a paragraph</P></BODY>

所有的 XHTML 元素必须被嵌套于根元素中
```
<html><head> ... </head><body> ... </body></html>
```