My name is Tom. I come from England. I like to have friends who are different from me. My best friend is Paul. Paul is funnier, more outgoing and athletic than me. He always tells jokes and makes me laugh. We also like different things. He likes going to the movies. He likes playing sports. He likes pop music. But I like reading books. He often asks me to go to the movies and gives me some interesting books. And I often give him CDs. We often help each other.

绵阳夜晚当涪江三桥上的灯光开亮时，涪江水上实景与江中“倒影”交相辉映，形成一幅绚丽多彩的图案．已知三桥下涪江水深为2m，桥上一彩灯距水面12m，则该彩灯的“倒影”距水面　 ____　m；若涪江水再上涨0.5m，则该彩灯与其对应“倒影”相距　 ____　m．