题目内容：
Cyberschools are getting popular becameA. they are less expensive for students
B. their students can work at their own speed
C. their graduates are more successful in society
D. they serve students in a wider age range
参考答案：
答案解析：
单选题：Cyberschools are getting popular becameA. they are less expe
- 题目分类：英语
- 题目类型：单选题
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A. they are less expensive for students
B. their students can work at their own speed
C. their graduates are more successful in society
D. they serve students in a wider age range