甘肃省兰州二十七中学2020-2021学年高二第二学期期中考试英语试卷 Word版含答案（无听力题）

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A Who says inventions are only made by grown-ups and professionals Over the years, children have also succeeded in making their useful contributions to the world. Here are a few inventions that came to life from the minds of young children. Hero Helmet Seven-ye

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