本世纪，人类社会将逐渐步入氢经济时代．目前大规模产氢方式仍是化学制氢． I、催化

如果把多项式x²-8x+m分解因式得（x-10）（x+n），那么m=______，n=______．

关于视交叉的描述，以下正确的是

A．两眼鼻侧视网膜的视神经进行交叉　

B．两眼颞侧视网膜的视神经进行交叉

C．两眼的视神经完全交叉

D．左眼鼻侧视网膜的视神经与右眼颞侧视网膜的视神经进行交叉　

E．左眼颞侧视网膜的视神经与右眼鼻侧视网膜的视神经进行交叉

统计指标中，质量指标是指反映总体相对程度、体现事物深度的内涵指标，数量指标是质量指标的派生指标。( )

《水利工程建设项目验收管理规定》（水利部第30号令）规定：验收主持单位应当成立验收委员会进行验收，验收结论应当经（）验收委员会成员同意。

A.三分之一以上

B.四分之三以上

C.三分之二以下

D.三分之二以上

Children in any society are expected to learn to conform to a number of social rules and expectations if they are to become participants in the culture. (46)Among the rules that children in our society are expected to learn are that certain classes of adults (such as teachers and doctors) are addressed by titles, that males and females use separate restroom facilities, and that women but not men wear dresses. These are examples of social conventions. In the absence of such a shared norm, the acts are neither right nor wrong. For this reason, conventions may be said to be arbitrary. For example, (47)we could just as easily have students address teachers by first names as have them call teachers by their last names and formal titles of Mr. or Ms.
Conventions, however, serve an important function by providing predictability and order to social life. (48)Without social conventions it would be impossible to organize social institutions such as schools, and societies as organized systems could not exist. The arbitrariness of conventions makes their importance difficult for children to figure out. (49) It is not until some time in adolescence that children come to fully understand the function that these arbitrary conventions serve to provide predictability and order to our social interactions.
In contrast with issues of convention are matters of morality. Morality refers to issues of human welfare, justice, and rights that are a function of the inherent features of interpersonal relations. Because of this, the right and wrong of moral actions are not simply determined by social consensus or the views of authority. For example, it is not possible to hit another person with force and not hurt the other person. Similarly, it is not possible to steal something valuable from someone else and not cause the person to experience the sense of loss. A moral judgment about unprovoked harm ( "It is wrong to hit") would not be dependent on the existence of a socially agreed upon rule or standard but could be generated solely from the intrinsic effects of the act (i.e., hitting hurts). (50)Similar analyses could be done regarding a broader range of issues that would extend beyond direct harm to concerns for what it means to be just, compassionate, and considerate of the rights of others.