A、Mating habits of squid and octopus. B、The evolution of certain forms of sea life. C、The study of marine shells. D、Survival ski

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问题  

选项 A、Mating habits of squid and octopus.
B、The evolution of certain forms of sea life.
C、The study of marine shells.
D、Survival skills of sea creatures.

答案B

解析
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