衡山四绝水帘洞之奇:下列程序段的基本控制结构,属于循环结构的是

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下列程序段的基本控制结构,属于循环结构的是

(A) a = 1
b = 2
b = a * b
(B)If x >= 0 Then
Msgbox("非负数")
End If
(C)For I = 0 To 5 step 2
s = s + 3
Next
D)If a < b Then
a = b
End If

(C)For I = 0 To 5 step 2
s = s + 3
Next

多看书啊,跑这来问.

(C)For I = 0 To 5 step 2
s = s + 3
Next