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<head>
<meta charset="utf-8">
<title> Ejercico CU00724B </title>
</head>
<body>
<h1> "Preferencias Musicales" </h1>
<form method="get" action="http;//aprenderaprogramar.com/action.php">
<label for="rock" name="rock"> Rock</label>
<input name="rock" type="checkbox" id="rock">
<br/>
<label for="pop" name="pop">Pop</label>
<input name="pop" type="checkbox" id="pop">
<br/>
<label for="jazz" name="jazz">Jazz</label>
<input name="jazz" type="checkbox" id="jazz">
<br/><br/>
<input name="edad" type="radio" id="edad">
<label for="de12a17" name="edad">De 12 a 17</label>
<br/>
<input name="edad" type="radio" id"edad">
<label for="de18a35" name="edad">De 18 a 35</label>
<br/>
<input name="edad" type="radio" id="edad">
<label for="de36a65" name="edad">De 36 a 65</label>
<br/>
<input name="edad" type="radio" id="edad">
<label for="masde65" name="edad">Mas de 65</label>
<br/><br/>
"Grupos y cantantes que te gustan"<br/><br/>
<select name="entrada1" multiple="multiple">
<optgroup label="Rock">
<option>James Heilfied</option>
<option>Roberto Trujillo</option>
<option>Lars Ulrich</option>
</optgroup>
<optgroup label="Pop">
<option>La Oreja de Van gohg</option>
<option>Fito y los fitipaldis</option>
<option>Extremo duro</option>
</optgroup>
<optgroup label="Jazz">
<option>Louis Amstrong</option>
<option>John Contrane</option>
<option>Miles Davis</option>
</optgroup>
</select>
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