单项选择题

Learning is most essential for _______.

A．all the organisms to survive
B．all the organisms to acquire learned behavior
C．human beings to respond to experience within an environment
D．human beings to survive and live in a society

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单项选择题

When you enter the lobby, you will find that ______.

A．it is decorated with Mediterranean furniture
B．the walls are painted in warm neutral bright colors
C．there is a large fireplace burning all the time
D．sunlight comes through the window in the sloping roof

单项选择题

What's the element to human culture

A．Communication in language.
B．Biological adaptation to the environment.
C．Safeguarding by instincts.
D．Learning to survive.