单项选择题

A．When it is breeding.
B．When it feels threatened by humans in its territory.
C．When its offspring is threatened.
D．When it is suffering from illness.
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单项选择题
A．To the Nile River.B．To the museum of Natural History,C．To Colorado.D．To Arizona.
A．To the Nile River.
B．To the museum of Natural History,
C．To Colorado.
D．To Arizona.
单项选择题
A．They eat huge mounts of food.B．They usually eat twice a day.C．They usually eat to their hearts’ content.D．They eat much less than people assume.
A．They eat huge mounts of food.
B．They usually eat twice a day.
C．They usually eat to their hearts’ content.
D．They eat much less than people assume.
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