There is no doubt ________ technological advance enables people to live more comfortably and happily...
2022-10-09 02:17:39 34次 2016-2017学年河北定州中学高一上第一次月考英语卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
There is no doubt ________ technological advance enables people to live more comfortably and happily.
A. whichB. whereC. whatD. that
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