LEA DX, NO DISP: MOV AH, 09H INT 21H MOV AX, 4C00H INT 21H EXAM NEXT: PROC MOV MOV CMP JB CMP JA INC LOOP JMP MOV RET ENDP ENDS END EXIT: EXIT1: EXAM CODE AH, 1 AL, STRING [SI] AL, '0' EXIT AL,'9' EXIT SI NEXT EXIT1 AH, 0 START 5.13 编写程序,判断某年是否是闰...