问题 多项选择题

下列“完全市场”必须同时具备的条件正确的是()。

A、同质商品,买者不在乎从谁的手里购买

B、买者和卖者的人有限

C、买者和卖者都有进出市场的自由

D、买者和卖者都掌握当前价格的完全信息,并能预测未来的价格

E、销售者要求总效用最大化,消费者要求总利润最大化

答案

参考答案:A, C, D

选择题
单项选择题

Cooperation is the common endeavor of two or more people to perform a task or reach a jointly cherished goal. Like competition and conflict, there are different forms of cooperation, based on group organization and attitudes.In the first form, known as primary cooperation, group and individual unite. The group contains nearly all of each individual’’s life. The rewards of the group’’s work are shared with each member. There is an interlocking identity of individual, group, and task performed. Means and goals become one, for cooperation itself is valued.While primary cooperation is most often characteristic of preliterate societies, secondary cooperation is characteristic of many modern societies. In secondary cooperation, individuals devote only part of their lives to the group. Cooperation itself is not a value. Most members of the group feel loyalty, but the welfare of the group is not the first consideration. Members perform tasks so that they can separately enjoy the fruits of their cooperation in the form of salary, prestige, or power. Business offices and professional athletic teams are examples of secondary cooperation.In the third type, called tertiary cooperation or accommodation, latent conflict underlies the shared work. The attitudes of the cooperating parties are purely opportunistic; the organization is loose and fragile. Accommodation involves common means to achieve antagonistic goals; it breaks down when the common means cease to aid each party in reaching its goals. This is not, strictly speaking, cooperation at all, and hence the somewhat contradictory term antagonistic cooperation is sometimes used for this relationship.

Which of the following is an example of the third form of cooperation as it is defined in Paragraph 4

A.Students form a study group so that all of them can improve their grades.

B.A new business attempts to take customers away from an established company.

C.Two rival political parties temporarily work together to defeat a third party.

D.Members of a farming community share work and the food that they grow.