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 nature.
单项选择题 The author says that he is a naturalist rather than a scientist probably because he thinks he（）
单项选择题 Girls are often ______ of snakes ( )
单项选择题 The secretary worked late into the night, ______ a long speech for the president. ( )
