甲国国籍法采出生地主义，乙国国籍法采父系血统主义。李某为甲国妇女，在乙国生下丙，则丙

VBA的自动运行宏，必须命名为______。

小华同学在“测定小灯泡的功率”实验中，所用电源电压为4.5V、7.5V和9V中的一个，滑动变阻器上标有”20Ω 2A”字样，小灯泡标有“4.5V”字样，估计小灯泡的额定功率小于1.5W。他按图15连接好电路，先将变阻器的滑片移至________端（选填“A”或“B”），然后闭合电键S，再移动变阻器的滑片P，观察到小灯泡发光逐渐变___________（选填“亮”或“暗”）。当小灯泡正常发光时，变阻器的滑片P恰好在中点上（即连入电路的电阻为10Ω）。小华所用的电源电压为_______V，小灯泡的额定功率为__________W。

明初的户役制度，将户籍分为若干类别，其中主要是民户，还有军户、匠户、灶户（煮盐户）等几十类，并严格禁止更换户别。这一措施有利于（）

A.缓和土地兼并

B.促成社会分化

C.强化社会控制

D.发展商品经济

The question of whether war is inevitable is one, which has concerned many of the world’s great writers. Before considering this question, it will be useful to introduce some related concepts. Conflict, defined as opposition among social entities directed against one another, is distinguished from competition, defined as opposition among social entities independently striving for something, which is in inadequate aupply. Competitors may not be aware of one another, while the parties to a conflict are. Conflict and competition are both categories of opposition, which has been defined as a process by which social entities function is the disservice of one another.

Opposition is thus contrasted with cooperation, the process by which social entities function in the service of one another. These definitions are necessary because it is important to emphasize that competition between individuals or groups in inevitable in a world of limited resources, but conflict is not. Conflict, nevertheless, is very likely to occur, and is probably an essential and desirable element of human societies.

Many authors have argued for the inevitability of war from the premise that in the struggle for existence among animal species, 0nly the fittest survive. In general, however, this struggle in nature is competition, not conflict. Social animals, such as monkeys and cattle, fight to win or maintain leadership of the group. The struggle for existence occurs not in such fights, but in the competition for limited feeding areas and for occupancy of areas free from meat-eating animals. Those who fail in this competition starve to death or become victims to other species. This struggle for existence does not resemble human war, but rather the competition of individuals for jobs, markets, and materials. The essence of the struggle is the competition for the necessities of life that are insufficient to satisfy all.

Among nations there is competition in developing resources, trades, skills, and a satisfactory way of life. The successful nations grow and prosper; the unsuccessful decline. While it is true that this competition may induce efforts to expand territory at the expense of others, and thus lead to conflict, it cannot be said that war-like conflict among nations is inevitable, although competition is.

The passage is probably intended to answer the question"（）."

A. Is war inevitable

B. Why is there conflict and competition

C. Is conflict desirable

D. Can competition lead to conflict

已知二叉树后序遍历序列是dabec，中序遍历序列是debac，它的前序遍历序列是( )。

A．cedba

B．acbed

C．decab

D．deabc