Use the default option, or add multiple to show multiple options at once.
<!DOCTYPE HTML>
<html>
<head>
<link href="http://java2s.com/style/bootstrap.min.css" rel="stylesheet">
</head><!--from www . j a v a2 s . c om-->
<body style='margin:20px;'>
<form class="form-horizontal">
<select class="form-control">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select>
<br/><br/><br/><br/><br/><br/>
<select multiple class="form-control">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select>
</form>
</body>
</html>