《资本论》是马克思一生中最重要的理论著作之一。下列相关的叙述，不确切的是(  )

阅读短文，判断对错。

   Look at this photo(照片). This woman is my mother. She is 36. This man is my father. He is 37. This girl is my sister. She is 11. The little boy is me. I am 6. I love them. And they love me very much.

下列表述中，所指的速度为平均速度的是(     )