题目内容：
1._____education is the instruction that occurs when the instructor and students are separatedby distance or time,or both.
A.Separation
B.Distance.
C.Length
D.Gap
参考答案：
选择题：1._____education is the instruction that occurs wh
- 题目分类：大学英语1
- 题目类型：选择题
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by distance or time,or both.
A.Separation
B.Distance.
C.Length
D.Gap