题目内容：
In the years after World War II,the middle class could be defined as
A．overburdened and in debt B．hard working and suspicious
C．prosperous and optimistic
D．young and foolish
参考答案：
答案解析：
单选题：In the years after World War II,the middle class could be de
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B．hard working and suspicious
C．prosperous and optimistic
D．young and foolish