实际产出与潜在产出水平之间的偏差被称为产出缺口。 ()
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Which of the following best illustrates the idea of the extended family？
A son travels from New York to Chicago to visit his parents.
B. A father and his children go to church.
C. A man and woman marry and move away from their parents.
D. A young girl learns how to read from her grandmother.
"Malefactors" in the eighth paragraph is closest in meaning to ______.
A. entrepreneurs
B. male presidents
C. criminals
D. heroes
The author implies that the development of social institutions other than the family in a
A. the end of the family as a social institution
B. the rise of industrialization
C. the rise in importance of the extended family
D. the decrease in the need for the extended family
边际消费倾向是()。
A. 每一收入水平上家庭的消费意向
B. 在任何收入水平的总收入与总消费之比
C. 在任何收入水平的总消费与总收入之比
D. 在任何收入水平上的消费变化与收入水平变化之比
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