【单选题】
Because of () diversity, seven separate groupings or divisions of algae have been established by botanists.
A. them
B. so that
C. those
D. their
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根据网考网移动考试中心的统计,该试题:
28%的考友选择了A选项
7%的考友选择了B选项
9%的考友选择了C选项
56%的考友选择了D选项