A、http：//localhost/script？’：EXEC+master..XP_cmdshell+’dir’：--
B、http：//localhost/script？1’：EXEC+master..XP_cmdshell+’dir’：--
C、http：//localhost/script？0’：EXEC+master..XP_cmdshell+’dir’：--
D、http：//localhost/script？1’：EXEC+master..XP_cmdshell+’dir’--