题目：
制作一个用户注册的界面如图所示
代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>用户注册界面</title>
</head>
<body>
<h1>用户注册</h1>
<form action="do.php" method="post">
<table border="1">
<tr>
<td >用户名</td>
<td>
<input type="text" name="username" id="uid" required="required"/>
</td>
</tr>
<tr>
<td>密码</td>
<td>
<input type="password" name="pwd" id="pwd" required="required">
</td>
</tr>
<tr>
<td>确认密码</td>
<td>
<input type="password2" name="pwd2" id="pwd2" required="required"/>
</td>
</tr>
<tr>
<td>性别</td>
<td>
<label><input type="radio" name="sex" value="1" checked="checked"/>男</label>
<label><input type="radio" name="sex" value="0"/>女</label>
</td>
</tr>
<tr>
<td>邮箱</td>
<td>
<input type="email" name="" id="">
</td>
</tr>
<tr>
<td>身份</td>
<td>
<select>
<option value="学生">学生</option>
<option value="教师">教师</option>
</select>
</td>
</tr>
<tr>
<td>自我介绍</td>
<td>
<textarea name="intro" id="" cols="30" rows="10"></textarea>
</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="注册">
<input type="reset" value="重填">
</td>
</tr>
</form>
</body>
</html>
