diff --git a/index.php b/index.php
index c187d2d..1012896 100644
--- a/index.php
+++ b/index.php
@@ -126,7 +126,7 @@ if($_SESSION[Student_ID] != ""){
             $ppp = $p + $pp;//the number of questions
             echo "<div id=\"ppp\" ppp=\"".$ppp."\"></div>\n<div class=\"section\" id=\"hiddenBefore\" style=\"display:none\"><h5>&nbsp;&nbsp;单选题</h5>\n";
             //创建随机数组
-            $randomArray = array_rand(range(1,107),$p+1);
+            $randomArray = array_rand(range(1,99),$p+1);
             // for($i = 1;$i <= $p;$i++){
             //   echo $randomArray[$i]."  ";
             // }