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I
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单项选择题
A.Food.B.Making twine.C.Medicine.D.Paving paths.
A.Food.
B.Making twine.
C.Medicine.
D.Paving paths.
单项选择题
A.When hunting for food.B.When sleeping.C.When being attacked.D.When communicating with their cousins.
A.When hunting for food.
B.When sleeping.
C.When being attacked.
D.When communicating with their cousins.
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