所以，我正在尝试对专栏进行测试Title or Names or DateTime
我正在尝试获取testtd 元素，并使用 CSSSelector 尝试了以下操作：
div#body-inner div#ctl00_ContentPlaceHolder1_Control1_pnlList div table#ctl00_ContentPlaceHolder1_Control1_gv.gv tbody tr.item td:nth-child(4)
<!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" xml:lang="en" lang="en">
<head id="ctl00_PageHead">
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>Employee</title>
<body id="ctl00_PageBody">
<form name="aspnetForm">
<div>
</div>
<div>
</div>
<table class="global-table" cellpadding="0" cellspacing="0">
<tr class="body">
<td>
<div id="body">
<div id="body-inner">
<h1>
Employee Information</h1>
<div id="ctl00_ContentPlaceHolder1_Control1_pnlList" style="width: 100%;">
<div class='filter'>
</div>
<div>
<table class="gv" cellspacing="0" border="0" id="ctl00_ContentPlaceHolder1_Control1_gv" style="border-collapse: collapse;">
<tr class="header">
<th class=" nolink" scope="col">
</th>
<th scope="col">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Sort$Phone')">
Phone</a>
</th>
<th class=" sorted-desc" scope="col">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Sort$Title')">
Title</a>
</th>
<th scope="col">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Sort$SubTitle')">
SubTitle</a>
</th>
<th scope="col">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Sort$Names')">
Names</a>
</th>
<th scope="col">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Sort$Names')">
Enames</a>
</th>
<th scope="col">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Sort$Active')">
Active</a>
</th>
<th scope="col">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Sort$DateTime')">
DateTime</a>
</th>
</tr>
<tr class="item">
<td align="center">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Select$0')">
Edit</a>
</td>
<td align="center" style="width: 15px;">
</td>
<td>
Test
</td>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
8/23/2011
</td>
</tr>
<tr class="altItem">
<td align="center">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Select$1')">
Edit</a>
</td>
<td align="center" style="width: 15px;">
</td>
<td>
Test1
</td>
<td>
1
</td>
<td>
Employee
</td>
<td>
</td>
<td>
</td>
<td>
7/31/2014
</td>
</tr>
<tr class="item">
<td align="center">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Select$2')">
Edit</a>
</td>
<td align="center" style="width: 15px;">
</td>
<td>
Test2</td>
<td>
111
</td>
<td>
Employer
</td>
<td>
</td>
<td>
</td>
<td>
7/31/2013
</td>
</tr>
<tr class="altItem">
<td align="center">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Select$3')">
Edit</a>
</td>
<td align="center" style="width: 15px;">
</td>
<td>
Test3</td>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
8/23/2011
</td>
</tr>
<tr class="item">
<td align="center">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Select$4')">
Edit</a>
</td>
<td align="center" style="width: 15px;">
</td>
<td>
Test4</td>
<td>
2
</td>
<td>
Employer
</td>
<td>
</td>
<td>
</td>
<td>
7/31/2012
</td>
</tr>
<tr class="altItem">
<td align="center">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Select$5')">
Edit</a>
</td>
<td align="center" style="width: 15px;">
</td>
<td>
Test5</td>
<td>
3
</td>
<td>
Employer
</td>
<td>
</td>
<td>
</td>
<td>
7/31/2012
</td>
</tr>
<tr class="item">
<td align="center">
<a href="javascript:__doPostBack('ctl00$ContentPlaceHolder1$Control1$gv','Select$6')">
Edit</a>
</td>
<td align="center" style="width: 15px;">
</td>
<td>
Test6
</td>
<td>
a
</td>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
7/20/2012
</td>
</tr>
</table>
</div>
</div>
</div>
</div>
</td>
</tr>
<tr class="footer">
<td>
</td>
</tr>
</table>
</form>
</body>
</html>
我得到的结果是所有匹配的元素，但我怎样才能只得到 tdtest呢？
<td >
test
</td>
<td >
DEMO TEST OCT 25
</td>
<td class="firefinder-match">
DEMO TEST OCT 25
</td>
<td >
DEMO TEST OCT 25
</td>
<td >
DEMO TEST OCT 25
</td>
<td >
DEMO TEST OCT 25
</td>