It can he inferred from the passage that the author was（）

单项选择题The author can't remember his relatives clearly because （）

A．he didn't live very long with them
B．the family was extremely large
C．he was too young when he lived with them
D．he was fully occupied with observing natur

单项选择题The first paragraph tells us the author（）

A．was interested in flowers and insects in his childhood
B．lost his hearing when he was a child
C．didn't like his brothers and sisters
D．was born to a naturalist's family