问题 问答题 简答题

评述购买力平价说的基本内容。要内容。

答案

参考答案:购买力平价说是历史非常悠久的汇率决定理论,它从开放经济下各国商品市场间存在的联系角度对汇率决定问题进行研究,认为货币之间的兑换比率取决于它们各自具有的购买力的对比。购买力平价可以分为绝对购买力平价、弱购买力平价或相对购买力平价。购买力平价的特点是从货币数量角度对汇率进行分析,这一特点使得它在汇率理论中居于非常基础的地位,同时也因为各种原因而难以获得实证检验的支持。

阅读理解

As any homemaker who has tried to keep order at the dinner table knows, there is far more to a family meal than food. Sociologist Michael Lewis has been studying 50 families to find out just how much more.

Lewis and his co-workers carried out their study by videotaping (录像) the families while they ate ordinary meals in their own homes. They found that parents with small families talk actively with each other and their children. But as the number of children gets larger, conversation gives way to the parents’ efforts to control the loud noise they make. That can have an important effect on the children. “In general the more question-asking the parents do, the higher the children’s IQ scores,” Lewis says. “And the more children there are, the less question-asking there is.”

The study also provides an explanation for why middle children often seem to have a harder time in life than their siblings (兄弟姐妹). Lewis found that in families with three or four children, dinner conversation is likely to center on the oldest child, who has the most to talk about, and the youngest, who needs the most attention. “Middle children are invisible,” says Lewis. “When you see someone get up from the table and walk around during dinner, chances are it’s the middle child.” There is, however, one thing that stops all conversation and prevents anyone from having attention: “When the TV is on,” Lewis says, “dinner is a non-event.”

66.The writer’s purpose in writing the text is to _________.

A.show the relationship between parents and children

B.teach parents ways to keep order at the dinner table

C.report on the findings of a study

D.give information about family problems

67.Parents with large families ask fewer questions at dinner because ____________.

A.they are busy serving food to their children

B.they are busy keeping order at the dinner table

C.they have to pay more attention to younger children

D.they are tired out having prepared food for the whole family

68.By saying “Middle children are invisible” in Paragraph 3, Lewis means that middle children _________.

A.have to help their parents to serve dinner

B.get the least attention from the family

C.are often kept away from the dinner table

D.find it hard to keep up with other children

69.Lewis’ research provides an answer to the question _________.

A.why TV is important in family life

B.why parents should keep good order

C.why children in small families seem to be quieter

D.why middle children seem to have more difficulties in life

70.Which of the following statements would the writer agree to?

A.It is important to have the right food for children.

B.It is a good idea to have the TV on during dinner.

C.Parents should talk to each of their children frequently.

D.Elder children should help the younger ones at dinner

单项选择题