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<title>Bài tập trắc nghiệm</title>
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<th><iframe src="https://drive.google.com/file/d/1-bN35oaK0EWWrDiSZuQOYlAEM3ZayPcQ/preview" width="1000" height="600" frameborder="0" marginheight="0" marginwidth="0">Đang tải…</iframe>
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<iframe src="https://docs.google.com/forms/d/e/1FAIpQLSdOeDftSaBa5nqyks8zbA0B5_1AnhjvzJI68tkO8DHp0Y4eqg/viewform?usp=sf_link" width="360" height="580" frameborder="0" marginheight="0" marginwidth="0">Đang tải…</iframe>
<center><font color="blue">Thầy: Họ và tên </font></center>
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