手足口病小知识" str=str+"
夏日的保健" str=str+"
预防甲型H1N1流感具..." str=str+"
威胁就在身边！" str=str+"
认识手足口病" str=str+"" str=str + "
| "
str=str+" 手足口病小知识 " str=str+" 夏日的保健" str=str+" 预防甲型H1N1流感具..." str=str+" 威胁就在身边！" str=str+" 认识手足口病" str=str+"" str=str + " |