单选题:设有定义“intx=2;”,下列表达式中,值不为6的是(  )。

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题目内容:
设有定义“intx=2;”,下列表达式中,值不为6的是(  )。 A.X*=x+1
B.x++,2*x
C.x*=(1+x)
D.2*x,x+=2

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