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题型:单选题 题类:易错题 难易度:困难

仁爱科普版九年级上Unit 4 Amazing ScienceTopic 2 I’m excited about the things that will be discovered in the f

With the development of science, more new technology _______ to the fields of IT.

A、has introduced B、is being introduced    C、is introduced D、was introduced
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