题干
A good friend（写一段话介绍你的好朋友。）
I have a good friend. His/ Her name is…….
She\He is……years old.
She\He has…… (clothes)
She/ He can…….
答案(点此获取答案解析）
I have a good friend. Her name is Amy, She is eight years old. She has a red dress. She can swim and run.
，则f(2)＝( )