The earnings of women are well below that of men

The earnings of women are well below that of men ____educational differences that are diminishing between the two sexes.

although

though

despite of

in spite of

答案及解析：本题考查状语从句D选项，句意：尽管两性之间所受教育的差别正在缩小，妇女的收入仍大大低于男人的收入。in spite of虽然，尽管，是固定搭配，故D选项正确。A，选项，although是连词，后接从句，故排除。B，选项， though是连词，后接从句，故排除。C，选项，despite不能和of连用，故排除。故正确答案为D选项。