人在突然遇冷时起鸡皮疙瘩，而在炎热时会出汗，这是人对“极端”温度的一种 ______。
参考答案：生理适应
The art center is ______ used to be Factory 789 and _______ millions of tractors were made.
A．what; where
B．where; where
C．that; which
D．where; which
考古学文化的基本涵义。
