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
单项选择题According to the author, a born naturalist should first of all be ()
A.full of ambition B.knowledgeable C.full of enthusiasm D.self-disciplined