[单项选择]Which of the following most accurately describes why firms under monopolistic competition face elastic demand for their products（）
A. High barriers to entry.
B. The availability of many complementary goods.
C. The availability of many close substitutes.

[单项选择]Which of the following most accurately describes the impact of a price ceiling set below the equilibrium price for a good and a minimum wage set above the equilibrium wage Price ceiling Minimum wage （）①A. Shortage Decreased unemployment ②B. Surplus Increased unemployment ③C. Shortage Increased unemployment
A. ①
B. ②
C. ③

[单项选择]Which of the following most accurately describes elasticity of supply Elasticity of supply is the percentage change in the quantity supplied divided by the percentage change in:（）
A. price and it equals zero when supply is perfectly elastic.
B. price and it equals zero when supply is perfectly inelastic.
C. quantity demanded and it equals infinity when supply is perfectly inelastic.

[单项选择]Which of the following most accurately describes society’s allocation of resources to the production of goods with external costs or external benefits External costs External benefits（） ①A. Over-allocation Over-allocation ②B. Under-allocation Under-allocation ③C. Over-allocation Under-allocation
A. ①
B. ②
C. ③

[单项选择]Which of the following statements most accurately describes the difference between LIBOR and Euribor（　）
A. LIBOR is a lending rate, while Euribor is a borrowing rate. 
B. LIBOR is a representative borrowing rate on U. S. dollars, while Euribor is a representative borrowing rate on euros. 
C. LIBOR is a global risk-free rate, while Euribor is a European risk-free rate.

[单项选择]Which of the following choices most accurately illustrates an operating liability and which most accurately illustrates a financing liability Operating liabilities Financing liabilities（）
A. Customer advances        Accrued liabilities 
B. Short-term note payable     Current portion of long-term debt
C. Accounts payable        Current portion of long-term debt

[单项选择]Which is most expensive
A. Black.
B. Brilliant Red K-2BP.
C. Brilliant Blue KNR.

[填空题]What best describes the society about which David Donald wrote

[单项选择]Which costs the most

[单项选择]Which of the following best describes Bill
A. Robust.
B. Brave.
C. Generous.
D. Dangerous.

[单项选择]The following describes the terms on which eBay offers you access to our services.
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A. Live.
B. Travel.
C. Go.
D. Get online.