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

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

admin2008-12-30  47
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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