创造发明在后。知识积累到一定程度再去创新。不赞赏中学生搞科研。美国基础教育一团糟,科研、改变世界的幌子满天飞。
创造发明在后。知识积累到一定程度再去创新。不赞赏中学生搞科研。美国基础教育一团糟,科研、改变世界的幌子满天飞。
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