题目内容

By ______, we mean language is resourceful because of its duality and its recursiveness.

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平均动脉压在一定范围内升降，脑血管可相应的收缩或舒张，以保持脑血流量相对恒定，属于_________

A. 神经调节
B. 体液调节
C. 神经—体液调节
D. 自身调节
E. 反馈调节

食物进入口腔后引起唾液腺、胃腺、胰腺分泌，属于（）

A. 神经调节
B. 体液调节
C. 神经—体液调节
D. 自身调节
E. 反馈调节

Categorization is the process of classifying our experiences into same categories based on commonalities and differences. As a major ingredient in the creation of human knowledge, it allows us to relate present experiences to past ones.

A. True
B. False

Root refers to the base form of a word that can be further analyzed without loss of identity.

A. True
B. False