有下列程序段，其输出结果是( )。 a=0:b=0 For i=-1 To -2 Step -1 For j=1 To 2 b=b+1 Next j a=a+1 Next i Print a;b

A．2 3

B．-2 2

C．4 2

D．2 4

[单选题]有下列程序段，其输出结果为( )。 a=0：b=0 For i=-1 To -2 Step-1 For i=1 To 2 b=b+1 Next j a=a+1 Next i Print a；bA．2 3B．-2 2C．4 2D．2 4

[单选题]（24）有下列程序段，其输出结果是 a=0:b=0 For i=-1 To -2 Step -1 For j=1 To 2 b=b+1 Next j a=a+1 Next i Print a；bA.2 3 B.-2 2 C.4 2 D.2 4

[单选题]下列程序段的执行结果是______ 。 a=0 b=0 For i = -1 To -2 Step -1 For j = 1 To 2 b=b+1 Next j a=a+1 Next i Print a; bA． 24B．- 20C．42D．22

[单选题]下列程序段的执行结果是______ 。 k=0 For j=1 To 2 For i=1 To 3 k = i+ 1 Next i For i=1 To 7 k= k + 1 Next i Next j Print kA． 11B．10C．9D．8

[单选题]下列程序段的执行结果为 ______。 A=0：B=0 For I=-1 To-2 Step-1 For J=1 To 2 B=B+1 Next J A=A+1 Next I Print A；BA．2 4B．-2 2C．4 2D．2 3

[单选题]下列程序段的执行结果为 ______。A=0:B=0For I = -1 To -2 Step -1 For J = 1 To 2 B=B+1 Next J A=A+1Next IPrint A; BA．2 4B．-2C．4D．2

[单选题]下列程序段的执行结果为 ______。 A=0=B=0 For I=-1 To-2 Step-1 For J=1 To 2 B=B+1 Next J A=A+1 Next I Print A；BA．2 4B．-2 2C．4 2D．2 3

[单选题]下列程序段的执行结果为______。 A=0: B=0 For I=-1 To -2 Step-1 For J=1 To 2 B=B+1 Next J A=A+1 Next I Print A; BA．2 4B．-2 2C．4 2D．2 3

[单选题]下列程序段的执行结果为______。 A=0: B=0 For I=-1 To-2 Step-1 For J=1 To 2 B=B+1 Next J A=A+1 Next I Print A;BA．2 4B．-2 2C．4 2D．2 3

[单选题]下列程序段的执行结果为 ______。 A=0：B=0 For I=-1 To -2 Step -1 For J=1 To 2 B=B+1 Next J A=A+1 Next I Print A；BA．2 4B．-2 2C．4 2D．2 3