下列各组线段中，不能构成直角三角形的是（　　）

对的写正确，错的写错误。

    A young woman walks into a hat shop. A man in the shop says," Good morning, madam. Can I help you?" "Good morning, the woman answers." There is a green hat with red flowers in your window. "The man is glad to hear that. He says to himself, "I can sell the hat now. It has been there for a long time. The man takes it out of the window. He shows it to the woman, "It's a nice hat! Do you want it in a box or do you want to put it on your head?" "Oh, I don't like the hat at all. I only want you to take it out of your window. I pass your shop every day and I hate to see it there."