Q4-1认识 XHTML和 DHTML 口正确嵌套<b>< This text is bold and italic</b></> <b><i>this text is bold and italic</i></b> 口被关闭 p>This is a paragraph p>This is another paragraph 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> a break:<br/ a horizontal rule: <hr/> An image: <img src="happy. gif" alt=" Happy face/> Syluccosina. comsylucc@sina.com Q4-1 认识XHTML和DHTML  正确嵌套  被关闭 <b><i>This text is bold and italic</b></i> <b><i>This text is bold and italic</i></b> <p>This is a paragraph <p>This is another paragraph <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"> A break: <br /> A horizontal rule: <hr /> An image: <img src="happy.gif" alt="Happy face" />