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White House press secretary Karoline Leavitt
  • 8/3/2014
Bài giảng cấu hinh electron và bản tuần hoàn hóa học, video hổ trợ các em tìm hiểu thêm về cấu tạo electron, dành cho học sinh lớp 10 và luyện thi đại học tham khảo, chúc các em thành công.
Hãy cố gằng hết mình và hãy là chính mình.

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