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。