<table border="1" align="center" cellpadding="3">
<tr>
<?php
$sorgu = mysql_query("select * from soru_test where ders = '$ders' and duzey= '$duzey' and konu='$konu' LIMIT $soru");

while($parca = mysql_fetch_assoc($sorgu)) {
	$aciklama[] = $parca['aciklama'];
	$id[] = $parca['id'];
	$a[] = $parca['a'];
	$b[] = $parca['b'];
	$c[] = $parca['c'];
	$d[] = $parca['d'];
	$e[] = $parca['e'];
	$resim[] = $parca['resim'];
	$dogru_sik[] = $parca['dogru_sik'];
}

$x = count($id);
$sutun = ceil($x/2);
$i = 0;
while($i < $sutun) {
    $y = $i + $sutun;
    echo "<td>".$id[$i].$aciklama[$i].$a[$i].$b[$i].$c[$i].$d[$i].$e[$i]"</td>\n";
    echo "<td>".$id[$y].$aciklama[$y].$a[$y].$b[$y].$c[$y].$d[$y].$e[$y]"</td>\n";
    echo "</tr>\n<tr>\n";
    $i++;
}
?>
</tr>
</table>