<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
select{
width: 200px;
}
</style>
</head>
<body>
<select );
BTN_de1.onclick = function(){
var x = s1.selectedOptions[0];
s1.removeChild(x);
}
</script>
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