HtmlAgility Xpath“div”无效

Question

HTML：

<div style="margin-left: 24pt; text-indent: -24pt" aaBT="xx" xx="a)">
      <p class="norm">a)<span style="word-spacing: 15pt"> </span>„xxx</p>
      <p class="list">asdf</p>
   <div aaBT="xx">blub<p class="list">blabla</p></div></div>

在控制台中测试

?T.ChildNodes.ToArray
{Length=6}
    (0): Name: "#text"
    (1): Name: "p"
    (2): Name: "#text"
    (3): Name: "p"
    (4): Name: "#text"
    (5): Name: "div"
?T.SelectSingleNode("div")
Nothing

怎么可能，找不到“div”，而“div”是一个子节点？