阅读短文，判断句子是“√”否“×”正确。
Look, this is my family photograph. The old man is my grandfather. He is shorter than his son, my father.
The woman is my mother. I'm her daughter. The boy is my cousin. I am younger than him. His mother is
Aunt Baiyun. Uncle Zhaowei is Aunt Baiyun's husband. We're a happy family.
( ) 1. My grandfather is shorter than my father.
( ) 2. My cousin is a girl.
( ) 3. My cousin's father is Uncle Zhaowei.
( ) 4. Aunt Baiyun and Uncle Zhaowei have a daughter.