审核和批准所有与质量有关的变更是谁的职责？

澳大利亚大陆位于哪个板块( )

A．亚欧板块

B．印度洋板块

C．太平洋板块

D．南极洲板块

轻度会阴撕裂在产后几日能自行愈合( )

A．产后3～5日
B．产后1周
C．产后10天
D．产后3周
E．产后6周

There are various ways in which individual economic units can interact with one another. Three basic ways may be described as the market system, the administered system, and the traditional system.

　　In a market system individual economic units are free to interact among each other in the marketplace. It is possible to buy commodities from other economic units or sell commodities to them. In a market, transactions may take place via barter or money exchange. In a barter economy, real goods such as automobiles, shoes, and pizzas are traded against each other. Obviously, finding somebody who wants to trade my old car in exchange for a sailboat may not always be an easy task. Hence, the introduction of money as a medium of exchange eases transactions considerably. In the modern market economy, goods and services are bought or sold for money.

　　An alternative to the market system is administrative control by some agency over all transactions. This agency will issue commands as to how much of each good and service should be produced, exchanged, and consumed by each economic unit. Central planning may be one way of administering such an economy. The central plan, drawn up by the government, shows the amounts of each commodity produced by the various firms and allocated to different households for consumption. This is an example of complete planning of production, consumption, and exchange for the whole economy.

　　In a traditional society, production and consumption patterns are governed by tradition; every person’s place within the economic system is fixed by parentage, religion, and custom. Transactions take place on the basis of tradition, too. People belonging to a certain group or caste（阶级） may have an obligation to care for other persons, provide them with food and shelter, care for their health, and provide for their education. Clearly, in a system where every decision is made on the basis of tradition alone, progress may be difficult to achieve. An inactive society may result.

小题1:What is the main purpose of the passage?

A．To outline contrasting types of economic systems.

B．To explain the science of economics.

C．To argue for the superiority of one economic system.

D．To compare barter and money-exchange markets.小题2:In the second paragraph, the underlined word “real” could best be replaced by _______.

A．valuable

B．concrete

C．absolute

D．reliable小题3:According to the passage, a barter economy can generate ______.

A．rapid speed of transactions

B．misunderstandings

C．inflation

D．difficulties for the traders小题4:According to the passage, who has the greatest degree of control in the administered system?

A．Individual households.

B．Small businesses.

C．Major corporations.

D．The government.小题5:Which of the following is not mentioned by the author as a criterion（标准）for determining a person’s position in a traditional society?

A．Family background

B．Age

C．Religious beliefs.

D．Custom

最好的椅座距离应是（）。

A.3～5cm的正距离

B.4cm以内的正距离

C.4cm以内的负距离

D.3～5cm的负距离

E.零距离

32—34°C是指发酵面团中（）。

A.操作室温度

B.面团温度

C.醒发室温度