Chinese people nee getting accustomed to using credit cards，but not yet to personal checks，which have long been popular in the Western countries：

A. Employment became widespread in the 17th and 18th centuries.
B. Unemployment will remain a major problem for industrialized nations.
C. The industrial age may now be coming to an end.
D. Some efforts and resources should be devoted to helping more people cope with the problem of unemployment.

A．exciting
B．pleasant
C．tough
D．significant