请问 匹配这段，正则应该如何写

请教 匹配这段，正则应该怎么写

<div>
<br>
        <div>
<br>
            <a>高清大图</a><br>
            <a>更多</a><br>
        </div>
<br>
        <div>
<br>
            <div>
<br>
			<div>
<br>
                    <a><br>
                        <img  src="/static/imghwm/default1.png" data-src="http://i0.sinaimg.cn/jc/http/slide.mil.news.sina.com.cn/U1335P27T162D7070F3917DT20130808120634.jpg" class="lazy" alt=" 请问 匹配这段，正则应该如何写 " ><br>
                        <span>中国火炮战力世界第三</span><br>
                    </a><br>
                </div>
<br>
<div>
<br>
                    <a><br>
                        <img  src="/static/imghwm/default1.png" data-src="http://i0.sinaimg.cn/jc/http/slide.mil.news.sina.com.cn/U1335P27T162D7069F3917DT20130808100146.jpg" class="lazy" alt=" 请问 匹配这段，正则应该如何写 " ><br>
                        <span>首长就是厉害箭无虚发呢</span><br>
                    </a><br>
                </div>
<br>
<div>
<br>
                    <a> <div class="clear">
                 
              
              
        
            </div></a>
</div>
</div>
</div>
</div>