下面四个图形是多面体的展开图，其中哪一个是四棱锥的展开图（ ）
A：
B：
C：
D：
以下正确表示北半球冬季的三个月是（ ）
Amy：Who's that ____ (bay boy)?
Chen Jie: He's ____ (me my) brother.
Amy: Is she ____ (you your) mother?
Chen Jie: Yes , ____ (She she ) is.
Amy: Is he ____ (you your) father?
Chen Jie: No, he isn't. ____ (he's He's ) my teacher!
