下列程序段的结果为 A="ABBACDDCBA" Fori=6 To 2 Step-2 X=Mid(A,i,i) Y=Left(A,i) Z=Right(A,i) Z=X&Y&Z Next Print Z

A．ABC

B．AABAAB

C．BBABBA

D．ABBABA

[单选题]执行以下程序段a$="abbacddcba"F．or i=6 To 2 Step -2X=Mid（a,i,i）Y=Left（a,i）z=Right（a,i）z=UCase（X & Y & z）Next iPrint z输出结果为（ ）。A．ABAB．BBABBAC．ABBABAD．AABAAB

[单选题]下列程序段的结果为A．="ABBACDDCBA"F．or i=6 To 2 Step-2X=Mid(A,i,i)Y=Left(A,i)Z=Right(A,i)Z=X&Y&ZNextPrint ZA．ABCB．AABAABC．BBABBAD．ABBABA

[单选题]执行以下程序段 a$="abbacddcba" For i=6 To 2 Step-2 X=Mid(a,i,i) Y=Left(a,i) Z=Right(a,i) z=UCase(X&Y&z) Next i Print z 输出结果为( )A．ABCB．BBABBAC．ABBABAD．AABAAB

[单选题]执行以下程序段 a$="abbacddcba" For i=6 To 2 Step-2 X=Mid(a，i，i) Y=Left(a，i) z=Rfight(a，i) z=UCase(X&Y&z) Next i Print z 输出结果为A．ABAB．BBABBAC．ABBABAD．AABAAB

[单选题]执行以下程序段 a$ ="abbacddcba" For i = 6 To 2 Step - 2 X = Mid(a， i，i) Y=Left(a， i) z=Right(a，i) z=UCase(X & Y &Z) Next i Print z 输出结果为A．ABCB．BBABBAC．ABBABAD．AABAAB

[单选题]下列程序段的结果为A．="ABBACDDCBA"F．or i=6 To 2 Step-2X=Mid(A,i,i)Y=Left(A,i)Z=Right (A,i)Z=X & Y & ZNextPrint ZA．ABCB．AABAABC．BBABBAD．ABBABA

[单选题]下列程序段的结果为 A = "ABBACDDCBA" For i=6 To 2 Step -2 X = Mid(A,i,i) Y=Left(A,i) Z=Right (A,i) Z=X & Y & Z Next Print ZA．ABCB．AABAABC．BBABBAD．ABBABA

[单选题]下列程序段的结果为 ______。 A= "ABBACDDCBA" For I= 6 To 2 Step-2 X=Mid(A，I，I) Y=Left(A，I) Z=Right(A，I) Z=X & Y & Z Next I Print ZA．ABAB．AABAABC．BBABBAD．ABBABA

[单选题]下列程序段的结果为______。 A="ABBACDDCBA" For I=6 To 2 Step-2 X=Mid(A,I,I) Y=Left(A,I) Z=Right(A,I) Z=X&Y&Z Next I Print ZA．ABAB．AABAABC．BBABBAD．ABBABA

[单选题]下列程序段的执行结果为 a="ABBACDDCBA" For I＝6 To 2 Step-2 x＝Mid(a,I,I) y＝Leh(a,I) z＝Right(a,I) z＝x & y & z Next I Print zA．ABAB．AABAABC．BBABBAD．ABBABA