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為什么我提交的代碼，看不到花枝的圖片？

為什么我提交的代碼，看不到花枝的圖片？別人提交的怎么就有顯示？

<!DOCTYPE?html?PUBLIC?"-//W3C//DTD?XHTML?1.0?Transitional//EN"?"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html?xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
<title>圖片背景</title>
<style?type="text/css">
body{?margin:0;}
div{background:#460E29;width:700px;padding:20px}
img{？background:url(http://img1.sycdn.imooc.com//5385ac820001905201440133.jpg);?width:95px;height:95px;padding:1px?20px?37px?30px;margin-right:10px;
</style>
</head>
<body>
<div><img?src="http://img1.sycdn.imooc.com//5385acb000013b0d00950095.jpg"?/><img?src="http://img1.sycdn.imooc.com//5385acb000013b0d00950095.jpg"?/><img?src="http://img1.sycdn.imooc.com//5385acb000013b0d00950095.jpg"?/><img?src="http://img1.sycdn.imooc.com//5385acb000013b0d00950095.jpg"?/>?</div>
</body>
</html>