There currently seems to be a large（ ）between the number of people employee in service industries, and those employed in the primary sector.
目前在服务行业的员工人数和主要部门的员工人数之间似乎有一个巨大的 矛盾。A 选项，不同的；B 选项，差别的，特异的；C 选项，歧视；D 选项，矛盾。空格需 要填名词，AB 排除，C 选项含义不符，选择 D 项。