It may be necessary to stop _____ in the learning process and go back to the difficult points in the...
2022-10-22 20:36:21 75次 2016届浙江杭州五校联盟高三年级上学期第一次诊断考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
It may be necessary to stop _____ in the learning process and go back to the difficult points in the lessons．
A． at intervals B． at random
C． at ease D． at length
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