外貌形容词：tall, short, thin, strong等 — 英语阅读题

阅读短文，回答问题。 My Family Hello! I'm Ben. There are four people in my family. My father is tall and strong. He can carry a big box. My mother is tall too, but she is thin. She likes running. My little sister Amy is short and thin. She is only five years old. I am short, but I am strong. I like playing football. We are a happy family! 问题：Who is short but strong in Ben's family?（谁又矮又壮？）请用简短英语或中文回答。