The _______ had spent a long time living with monkeys.
（A）ecologist
（B）zoologist
（C）biologist
（D）botanist
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- 1It is an Eskimo custom to _____ noses as a greeting.
- 2A contemporary _______ once said: man lives on the earth as a guest of green plants.
- 3Human beings also belong to the _______ species.
- 4The ( ) always ask us to stay for lunch.(villager的适当形式)
- 5Lions and house cats evolved from a common _______.
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