A-Level经济真题每期一练（21）

上期真题答案：1.C 2.D 3.B 4.C 5.B

接下来是今天的真题，一起练起来呀~

1.

2. For monopoly to persist over time in a market, it is most likely that

A the good produced is a necessity.

B the firm is charging high prices.

C there are barriers to entry.

D the firm is productively efficient

 3. A profit maximising monopolist facing constant average costs experiences a decrease in demand. Other things being equal, which of the following is likely to happen?

4. T