问题 多项选择题

以下关于边际消费倾向的说法,正确的有______。

A.表示消费增量与收入增量的比率
B.是消费曲线上任意一点的斜率
C.大于0小于1
D.随收入增加,边际消费倾向递减

答案

参考答案:A,B,C,D

解析: 边际消费倾向β是指增加的一单位收入中用于增加消费部分的比率,即消费增量与收入增量的比率,用MPC表示。即MPC=Δc/Δy=dc/dy。其特点表现在:边际消费倾向是消费曲线上任意一点的斜率;MPC总是大于O小于1;随收入增加,MPC递减。

阅读理解

阅读理解。

     There is a photo on Becky's desk. It is a picture of her family. There are four people in it. 

     The man is her father. He is 38 years old. He can speak Chinese. There is a woman behind Becky. She

  is Becky's mother. She is 37 years old. She can't speak Chinese, but she speaks English. They're

  teachers. They work in a school. There is a boy in the picture, too. He is Becky's brother. His name is

  Jack. He is twelve years old. He can play football and ride a bike. He has got an English friend. Her

 name is Betty.

     Becky and her brother are in the same school, but they aren't in the same grade. They look like their

 mother. They are American. It's a big family.

1. _____ can speak Chinese.

    A. Becky's father                        

    B. Becky's mother

    C. Becky's brother                    

    D. Becky

2. Becky's mother is _____ years old.

    A. 38                

    B. 37            

    C. 35                  

    D. 36

3. Jack's friend is _____.

    A. American                            

    B. Japanese

    C. English                                

    D. Chinese

4. Becky and her brother are _____.

    A. in the same school but not the same grade

    B. in the same school and the same grade

    C. in the same school and the same class

    D. in the same grade but not the same class

5. Becky and Jack look like _____.

    A. their parents                  

    B. their grandparents

    C. their father                    

    D. their mother

单项选择题