采集时有多个下载地址.只想取一个咋办

subway

<div class="dodo3b">
<ul>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc51' /> <a href='http://51.duote.net/huangjueold.exe'  >武汉电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc53' /> <a href='http://53.duote.net/huangjueold.exe'  >沈阳电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc54' /> <a href='http://54.duote.net/huangjueold.exe'  >宁夏电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc55' /> <a href='http://55.duote.cn/huangjueold.exe'  >菏泽电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc9' /> <a href='http://9.duote.com/huangjueold.exe'  >深圳电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc34' /> <a href='http://34.duote.com/huangjueold.exe'  >福建电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc35' /> <a href='http://35.duote.com/huangjueold.exe'  >兰州电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc36' /> <a href='http://36.duote.com/huangjueold.exe'  >山东电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc10' /> <a href='http://10.duote.com/huangjueold.exe'  >河南电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc26' /> <a href='http://26.duote.com/huangjueold.exe'  >广东电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc24' /> <a href='http://24.duote.com/huangjueold.exe'  >浙江电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc4' /> <a href='http://4.duote.com/huangjueold.exe'  >成都电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc52' /> <a href='http://52.duote.net/huangjueold.exe'  >江亚电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc12' /> <a href='http://12.duote.net/huangjueold.exe'  >湖南电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc3' /> <a href='http://3.duote.com/huangjueold.exe'  >长沙电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc2' /> <a href='http://2.duote.com/huangjueold.exe'  >嘉兴电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc5' /> <a href='http://5.duote.com/huangjueold.exe'  >常州电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc6' /> <a href='http://6.duote.com/huangjueold.exe'  >广西电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc70' /> <a href='http://70.duote.net/huangjueold.exe'  >无锡电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc18' /> <a href='http://18.duote.net/huangjueold.exe'  >重庆电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc71' /> <a href='http://71.duote.net/huangjueold.exe'  >南京电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc42' /> <a href='http://42.duote.net/huangjueold.exe'  >汕头电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc67' /> <a href='http://67.duote.cn/huangjueold.exe'  >浦东电信</a></li>
<li><img src="/img/dot2.gif" width="13" height="13" id='cc72' /> <a href='http://72.duote.cn/huangjueold.exe'  >大庆电信</a></li>
</ul>
</div></div>

像多特这样地....

采回来就有这么多

1. http://51.duote.net/baiasdkfjoweijo.exe
   
2. http://53.duote.net/baiasdkfjoweijo.exe
   
3. http://54.duote.net/baiasdkfjoweijo.exe
   
4. http://55.duote.cn/baiasdkfjoweijo.exe
   
5. http://9.duote.com/baiasdkfjoweijo.exe
   
6. http://34.duote.com/baiasdkfjoweijo.exe
   
7. http://35.duote.com/baiasdkfjoweijo.exe
   
8. http://36.duote.com/baiasdkfjoweijo.exe
   
9. http://10.duote.com/baiasdkfjoweijo.exe
   
10. http://26.duote.com/baiasdkfjoweijo.exe
    
11. http://24.duote.com/baiasdkfjoweijo.exe
    
12. http://4.duote.com/baiasdkfjoweijo.exe
    
13. http://52.duote.net/baiasdkfjoweijo.exe
    
14. http://12.duote.net/baiasdkfjoweijo.exe
    
15. http://3.duote.com/baiasdkfjoweijo.exe
    
16. http://2.duote.com/baiasdkfjoweijo.exe
    
17. http://5.duote.com/baiasdkfjoweijo.exe
    
18. http://6.duote.com/baiasdkfjoweijo.exe
    
19. http://70.duote.net/baiasdkfjoweijo.exe
    
20. http://18.duote.net/baiasdkfjoweijo.exe
    
21. http://71.duote.net/baiasdkfjoweijo.exe
    
22. http://42.duote.net/baiasdkfjoweijo.exe
    
23. http://67.duote.cn/baiasdkfjoweijo.exe
    
24. http://72.duote.cn/baiasdkfjoweijo.exe

复制代码

但是只想取一个下载地址.....怎么弄..望高人指点..

subway

已解决