As is known to all , theory is based on practice and _______ serves practice. A. by chance B. by tu...
2023-02-12 23:47:05 96次 重庆外国语学校09-10学年高二下学期期中考试 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
As is known to all , theory is based on practice and _______ serves
practice.
A. by chance B. by turn C.
in return D. in turn
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