並前往http://www3.ptgsh.ptc.edu.tw/sub/biology/ppt/%E7%86%B1%E5%B8%B6%E9%9B%A8%E6%9E%97%E7%94%9F%E6%85%8B%E7%B3%BB/%E7%86%B1%E5%B8%B6%E9%9B%A8%E6%9E%97%E5%A0%B1%E5%91%8A.ppt