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[Sentence Correction]
试题详情
题目：
Although at one time children's programming had been limited to a few hours a week, now, however, there are at least four cable networks that dedicate themselves entirely to shows produced specifically for children.
选项:
A、Although at one time children's programming had been limited to a few hours a week, now, however, there are at least four cable networks that dedicate themselves
B、With children's programming having been limited at one time to a few hours a week, now at least four cable networks have dedicated themselves
C、Once limited to a few hours a week, there are now at least four cable networks with children's programming that dedicate themselves
D、Children's programming was once limited to a few hours a week, but now there are at least four cable networks dedicated
E、While children's programming had once been limited to a few hours a week, at least four cable networks are now dedicated
答案:
D
提问：
问下老师，E选项的问题是用了过去完成时吧？
解答：
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提问：
问下老师，E选项的问题是用了过去完成时吧？
解答：
点赞1
阅读2521
提问：
做的时候觉得要两个时间形成对比 我觉得there are 不太好就排除了
解答：
点赞0
阅读2527
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