abstract：<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>表格</title></head><body><ta
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>表格</title>
</head>
<body>
<table cellpadding="5" cellspacing="0" border="1">
<caption>成绩单</caption>
<thead>
<th>姓名</th>
<th>语文</th>
<th>数学</th>
<th>英语</th>
<th>合并列演示</th>
</thead>
<tbody>
<tr>
<td>张三</td>
<td>91</td>
<td>88</td>
<td>93</td>
<td rowspan="4"></td>
</tr>
<tr>
<td>李四</td>
<td>89</td>
<td>92</td>
<td>87</td>
</tr>
</tbody>
<tr>
<td colspan="4">合并行演示</td>
</tr>
<tfoot>
<tr>
<td>平均成绩</td>
<td>90</td>
<td>90</td>
<td>90</td>
<td></td>
</tr>
</tfoot>
</table>
</body>
</html>