【单选题】What would happen to the equilibrium price and quantity of lattés if coffee shops began using a machine that reduced the amount of labor necessary to produce them?
A.
Both the equilibrium price and quantity would increase.
B.
Both the equilibrium price and quantity would decrease.
C.
The equilibrium price would increase, and the equilibrium quantity would decrease.
D.
The equilibrium price would decrease, and the equilibrium quantity would increase.
【简答题】If the income tax exemption on municipal bonds were abolished, what would happen to the interest rates on these bonds? What effect would the change have on interest rates on U.S. Treasury securities?
【单选题】What would happen to the U.S. economy if all its commercial banks suddenly closed their doors? Throughout most of American history, the answer would have been a disaster of epic proportions, akin to t...