A.AND AL,‘A’ B.SHL AX,4 C.MOV CS,AX D.TEST[BX],AL E.MOV DS,1234H
A.MOV[100H],[BX] B.MOVDS,ES C.ADDV[BX],CX D.MOVAX,34H
A.putchar(C. B.getchar(C. C.getchar() D.scanf("%c",&C.
A.空格 B.逗號(hào) C.TAB D.回車
A.MOV BX,A B.LEA BX,A C.MOV BX,[A] D.MOV BX,OFFSET A