题目

写作。请介绍你的家庭成员，他们都有怎样的外貌或者性格呢？不少于五句话。 答案：【答案】范文：My family membersI have a big and happy family. My mother is a pretty lady. She is thin and tall. She is also kind to us. My father is fat and tall. He is also very strict. I have a little sister. She is five years old. She has black eyes and hair. And she is a cute girl.I love my family.【解析】略 如图，已知扇形OBC、OAD的半径之间的关系是OB＝OA，则的长是长的． [　　] A．倍 B．2倍 C．倍 D．4倍