However,marriages between members of different groups（interclass,interfaith,and interracial marriages）are increasing,probably because of the greater（ ）of today’s youth and the fact that they are restricted by fewer prejudices than their parents.A.mobilityB.motiveC.moralD.mission
However,marriages between members of different groups（interclass,interfaith,and interracial marriages）are increasing,probably because of the greater（ ）of today’s youth and the fact that they are restricted by fewer prejudices than their parents.
A.mobility
B.motive
C.moral
D.mission
B.motive
C.moral
D.mission
参考解析
解析：据常识（美国人口流动性强）和逻辑推理可知，mobility“流动性”是正确答案。B.motive“动机，动因”；C.moral“教训，寓意”；D.mission“使命，任务
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