Bắt đầu kỳ thi chọn đội tuyển Olympic quốc tế 2013
Kỳ thi chọn đội tuyển học sinh giỏi quốc gia dự thi Olympic quốc tế năm 2013 đã được tổ chức tại Đại học Sư phạm Hà Nội trong các ngày từ 5/4 đến 7/4.
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njzDkuG7rlDDksOj4bqhOcOSKOG7nirDksOjMMOhw5Lhu47hu4zDkuG7rjIqw5LDo8SDxJFAPMOSw6DEgzDhu7DDkiQq4buaw5Lhu7B7w5LDoyXhu6I8JcOSw6Mm4buwJcOS4buw4buaPsOSPCXhu6TDo8OSw6PhuqE+PCTDksOjMzwkw5LhuqMww5LGoOG7ksOS4buuMirDksOjxIPEkUA8w5LDoyXhu5opw5IkKuG7msOSIcOpw5LDoyUqw4xKL8OhS0rDocOS4buwKOG7muG6o+G6o+G7gMOTw6FtPuG7rMSRw5NLw4MlVj7DksODw4NEQuG7pUovw6FL