下列表达式中,与其他3个大小不同的一个是().

AA#A

B4A

C?xy

DconstA

A9

B7

Cabcd

D123

A{计算机等级考试}

B(计算机等级考试)

C计算机等级考试

D"计算机等级考试"

A4

B5

C6

D7

A/

B

CMod

D'+

AIf Int(A)=A And Sqr(A)>=100 Then Print "OK" Else Print "Error"

BIf Fix(A)=A And Abs(A)>=100 Then Print "OK" Else Print "Error"

CIf Int(A)=A And (A>=100,A<=-100) Then Print "OK" Else Print "Error"

DIf Fix(A)=A And A>=100 And A<=-100 Then Print "OK" Else Print "Error"

ALog

BStr

CLen

DVal

A整型

B长整型

C单精度型

D双精度型

A5ABCDE

B-5ABCDE

C10

D0

ASINGLE

BDOUBLE

CCURRENCY

DBOOLEAN