第19题: [单项选择]当发生Command1_C1ick事件后，以下程序的输出结果是 Private Sub Command1_Click（ ） Dim i As Integer Dim a(10) As Integer For i＝9 To 0 Step -1 a(i)=10-i Next i Print a(2);a(5);a(8) End Sub A. 2 5 8 B. 7 4 1 C. 8 5 2 D. 3 6 9 参考答案:C 答案解析:[解析] 本题主要考查对循环语句的理解。i＝2时，执行语句a(i)＝10-i得a(2)＝10-2即a(2)为8。同理i＝5时，执行语句a(i)＝10-i得a(5)＝10-5即a(5)为5。i=8时，执
第21题: [单项选择]In a SELECT statement that includes a WHERE clause, where is the GROUP BY clause placed in the SELECT statement?（） A. Immediately after the SELECT clause B. Before the WHERE clause C. Before the FROM clause D. After the ORDER BY clause E. After the WHERE clause 参考答案:E
