2019年CFA考试《CFA一级》考试共240题，分为单选题。小编为您整理Economics5道练习题，附答案解析，供您备考练习。

1、In a simple economy containing only two goods – apples and shirts – the prices and quantities in the base period and the current period are:Assuming the base period consumer price index (CPI) = 100, the CPI for the current period is closest to:【单选题】

A.103.57.

B.107.00.

C.113.75.

正确答案:B

答案解析:"Monitoring Jobs and the Price Level” Michael ParkinThe cost of the CPI basket at base period prices is: (25 × $1.00) + (5 × $20.00) = $125. The cost of the CPI basket at current period prices is: (25 × $1.25) + (5 × $20.50) = $133.75. The CPI for the period is ($133.75 / $125) × 100 = 107.

2、The tools used by the U.S. Federal Reserve system (the Fed) to implement monetary policy most likely include:【单选题】

A.transfer payments.

B.open market operations.

C.raising or lowering income taxes.

正确答案:B

答案解析:“Money, the Price Level, and Inflation,” Michael ParkinThe Fed uses three main policy tools to achieve its objectives: required reserve ratios, discount rate, and open market operations.

3、In an effort to influence the economy, a central bank conducted open market activities by selling government bonds. This implies that the central bank is most likely attempting to:【单选题】

A.contract the economy by reducing bank reserves.

B.expand the economy through a lower policy interest rate.

C.contract the economy through a lower policy interest rate.

正确答案:A

答案解析:“Monetary and Fiscal Policy,” Andrew Clare and Stephen ThomasA is correct. Selling government bonds results in a reduction of banks’ reserves and reduces banks’ ability to lend, causing a decline in money growth through the multiplier mechanism and hence leading to a contraction in the economy.

4、The following data apply to a country in its domestic currency units:Using the expenditures approach, the country’s gross domestic product (GDP) is closest to:【单选题】

A.1,448,650.

B.1,451,500.

C.1,466,490.

正确答案:A

答案解析:“Aggregate Output, Prices, and Economic Growth,” Paul R. Kutasovic, CFA and Richard G. Fritz

5、An analyst does research about the income elasticity of demand.As income risesfrom $500 per week to $1 500 per week, the quantity demanded for a product increasesfrom 1 100 units to 1 500 units, the income elasticity of demand is closest to:【单选题】

A.0.25

B.0.31

C.0.40

正确答案:B

答案解析:[（1 500 - 1 100）/（1 500 + 1100）/2]/[（$1 500 - $500）/（$1 500 + $500）/2] =0.3077/1 = 0.3077。