急……在线等待

Question

<table border="1" width=300 height=300>
    <tr>
      <td>11</td>
      <td>12</td>
      <td>13</td>
    </tr>
    <tr style="display:none">
      <td>21</td>
      <td>22</td>
      <td>23</td>
    </tr>
    <tr>
      <td>31</td>
      <td>32</td>
      <td>33</td>
    </tr>
    <tr>
      <td>41</td>
      <td>42</td>
      <td>43</td>
    </tr>
  </table>

Answer 1

汗，能否在具体点……
我是新手