A-Level真题每期一练（10）

上期真题答案：1.D 2.D 3.B 4.A 5.D

接下来是今天的真题，一起练起来呀~

1.

The diagram shows the market for microchips where the initial equilibrium price is Pe and quantity Qe. (You may annotate the diagram in your answer.) A decrease in the production costs of micro chips through the development of new technology is most likely to

A raise price and decrease producer surplus

B maintain the existing price and decrease producer surplus

C maintain the existing price and increase consumer surplus

D lower price and increase consumer surplus

2.There are three firms (X, Y and Z) supplying a market. The table shows their supply at four different prices.

Which price change is required for market supply to halve?

A $20 to$10  

B$30to $10  

C $30 to $20  

D $40 to $20

3.All other things being equal, supply curves slope upwards from left to right because

A higher prices lead to higher costs.

B lower prices lead to higher output.

C lower prices lead to higher demand.

D higher prices lead to higher profits.

4.There are three firms, X, Y and Z, supplying a market. The table shows their supply at four different prices.

Which price change is required for market supply to halve?

A $90 to$70 

B $90 to $80 

C $100 to $70 

D $100 to $90

5.A movement along a supply curve for a product is likely to occur if there is a rise in

A the demand for a complementary product.

B the distribution costs of the product.

C the subsidy a producer receives for producing the product.

D the wages of the employees who produce the product.