问题
单项选择题
Which of the following statements about unemployment is least accurate（）
A. Frictional unemployment is unemployment due to changes in the economy that prevent qualified workers from being immediately matched with existing job openings.
B. The economy is said to be operating at full employment only if there is no cyclical or frictional unemployment in the economy.
C. The economy is said to be operating at full employment when cyclical unemployment is zero.
答案
参考答案：B
解析：
The economy is said to be operating at full employment when cyclical unemployment is zero. Structural and/or frictional unemployment may still exist, but the economy may still be said to be at full employment.