10. 设串s1=abcdefg，s2=ab，则Concat(s1,s2)的返回值（　　）。（2分）-湖北继续教育网网校

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[单选题]10. 设串s1=abcdefg，s2=ab，则Concat(s1,s2)的返回值（　　）。（2分）

AAab　Bcdefg　Cabcdefg　Dabcdefgab

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