is not a valid(is not a valid floating point value)

經濟學是研究社會如何使用世界資源的學科。A-level經濟學向學生介紹構成經濟世界的基本概念、理論和問題，為學生提供一個強大的知識基礎。

對于希望未來從事經濟或金融行業工作的人來說，這是一個很有幫助的起點。另外，了解一定的經濟知識也是有長遠的益處的。

1.What islikely to occur when an economy moves from state planning to a market system?

A. Consumerchoice is reduced.

B. Enterpri is discouraged.

C. Theamount of innovation declines.

D. The output of merit goods isreduced.

2.The main economic objective of firms in a market economyis most likely to be the

A. achievement of economies of scale.

B. maximisation of consumer satisfaction.

C. achievement of an efficient allocation of resources.

D. maximisation ofprofits.

3.In theirtransition to market economies some former command economies have adopted agradual approach. This has meant continuing with some of the features of theircommand system.

What is nota valid, short-run reason for continuing with the feature shown?

4.The diagram shows a production possibility curve for aneconomy that produces only two goods, X and Y.

The economy produces 400of good Y and produces on its production possibility curve. Which quantity of goodX is given up?

A. 600

B. 800

C. 1200

D. 1600

5.The diagram below shows a country’s productionpossibility frontier.

Which one of the following combinations of goods andrvices, A, B, C or D, could be produced with the resources available?

A. Only W and Y

B. Only V, W and X

C. Only V, W, X and Y

D. V, W, X, Y and Z