The invention of smart phones changed the world in many ways.（改为一般疑问句） the invention of smart phones the world in many

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1. (2017·上海) The invention of smart phones changed the world in many ways.（改为一般疑问句）
the invention of smart phones the world in many ways?

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2017年上海市中考英语真题试卷（含听力音频）