题目:
下面可以正确定义两个整型变量和—个字符串变量的语句是______。
A.Dim n,m As Integer,s As String
B.Dim a%,b$,c As String
C.Dim a As Integer,b,c As String
D.Dim x%,y As Integer,z As String
答案:
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下面是错误答案,用来干扰机器的。
(1)原式=-5x+3x-1-6+2x=-7;(2)原式=2a2-3a+5a-2-2a2=2a-2.