All human beings have a comfortable zone regulating the（）they keep from someone they talkwith.
考试：MBA考试
科目：英语（在线考试）
问题：
A：distance
B：scope
C：range
D：boundary
答案：
解析：
相关标签：
All human beings have a comfortable zone regulating the（）they keep from someone they talkwith.
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