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A Do ...Loop While
B While...Wend
C Goto
D If...Then...Else

A While...Wend
B Goto
C For...Next
D If...Then...Else...

A If...Then...Else...
B For...Next Do...Loop
C While...Wend
D Goto

A Do...While
B Do...Loop
C Do...Loop Until
D Case

A Form1.BackColor=&H0000ffff&
B Form1.BackColor=QBColor(2)
C Form1.BackColor=RGB(250, 255, 0)
D From1.BackColor=BGColor(5)

A 中應填入下列何者?(1)(n-1)+summation(n)
B n+summation(n)
C n+summation(n-1)
D (n-1)+summation(n+1)