Hi, boys and girls!  ____ （感谢）for your pictures. ____  (在这里)is a photo of my____ （家庭）.This is my grandfather ,Barry. ____  (那个)is my grandmother, Linda. She is 70.Look!What____ (颜色)is her jacket? Oh, it's red. These are my____（父母）.This is my____ (母亲),Jane and this is my father, Henry. And this is my ____ （叔叔）,Paul. He's my father's brother. The girl is my____（堂妹）, Lisa. Look at the boy. He is sad. He ____ (丢失)his books. He is my brother.

这13名学生听力测试成绩的中位数是（   ）

—Twice a week.