【单选题】Which of the following is true according to the passage?
A.
Anthropologists of necessity know how to behave in a foreign culture.
B.
Anthropologists describe patterns of human behavior.
C.
Anthropologists all study the behavioral patterns of foreign nations.
D.
Anthropologists prescribe rules of human behavior.
【简答题】两个零件接触时,在同一方向上的接触面最好只有( )
【判断题】哮病治疗的基本原则是: 发作时 治 标,平时 治 本。
【判断题】Some anthropologists refer to custom, rituals and, in a word, the total life way of a people as popular culture.()
【判断题】自变量又称做实验因子或实验因素,它由实验者操纵,由实验者自身独立的变化而引起其它变量发生变化。( )