It may be necessary to stop ______ in the learning process and go back to the difficult points in the lesson.

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问题 It may be necessary to stop ______ in the learning process and go back to the difficult points in the lesson.

选项 A、at a distance
B、at ease
C、at intervals
D、at length

答案C

解析 at a distance指距离上的远近;at ease舒适自在,心情舒畅;at length最后,终于,详尽地;at intervals有时间间隔的意思。
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本试题收录于: 英语题库普高专升本分类
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