Economics LOS22:
Which of the following would be counted as frictional unemployment?
A. Due to the negative growth of GDP, Smith was laid off.
B. Johnson was fired from his job after he got into an argument with his foreman and has not sought a new job.
C. Alothough there were jobs available, Jone was unable to find an employer with a satisfactory openning.
Notes上的答案是C, 但是我总觉得B有待商榷. 按照frictional unemployment的定义, B更接近一些. 请老师予以点拨.

另外最近发现自己做题有一个现象, 大部分都能达到70%以上, 甚至还有全对的, 但仍有2, 3部分在50%-70%之间, 其中还会有几率出现1个部分正确率低于50%的状况..
是不是应该反复做, 加深印象呢? 请老师指点. 谢谢!