医学全在线每日一练免费为所有职称英语考生免费提供练习题，祝广大考生顺利通过2016年职称英语考试。
阅读理解：
The United States perceives itself to be a middle-class nation.However,middle class is not a real designation,nor does it carry privileges.It is more of a perception,which probably was as true as it ever could be right after World War II.The economy was growing,more and more people owned their own homes,workers had solid contracts with the companies that employed them,and nearly everyone who wanted a higher education could have one.
The information in this passage deals with_______.
A.an individual
B.a social and economic group
C.a political organization
D.Government
正确答案：B
答案解析：答案选B.通过阅读本段，middle class中产阶级是一个群体，选答案B.
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