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．They make decisions by tossing coins.B．They are not physically separated.C．They think exactly the same way.D．They share most of their vital organs.
A．They make decisions by tossing coins.
B．They are not physically separated.
C．They think exactly the same way.
D．They share most of their vital organs.
单项选择题
Rosa Parks enjoyed a carefree childhood.
A．Y
B．N
C．NG
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