单项选择题

The author says that he is a naturalist rather than a scientist probably because he thinks he ()

A. comes up with solutions in a most natural way
B. lacks some of the qualities required of a scientist
C. just reads about other people’s observations and discoveries
D. has a great deal of trouble doing mental arithmetic

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单项选择题

24()

A.as
B.like
C.for
D.so

单项选择题

The author can’t remember his relatives clearly because ()

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