The 1920s in the United States has been described by many historians as a period of ___________.
A、material failure
B、spiritual frustration
C、political setbacks
D、welfare reform
【正确答案】：B
【题目解析】：本题考查20世纪20年代的美国。根据课本P209可知，20世纪20年代的美国被许多历史学家描述为一个精神沮丧的时期。
