For ten years, a successful career, may be love is blank, recollection of events, people with inexplicable pain, expressing the aspirations of the younger generation.

十年了，事业有成，可爱情却是空白，回忆往事，让人有莫名的伤痛，表达了年轻一代的心声。

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Under the new generation of teaching reform, this article will cover the lack of the history teaching method and the blank of the daily teaching practice.

也弥补了新一轮课改下，历史学科教学理论的不足和实践探索经验的空白，具有一定的学术价值。

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METHODS: The 3rd generation of BMSCs was randomly divided into blank group, control group and Chinese medicine with high, moderate and low dose groups.

方法：第3代骨髓间充质干细胞随机分为中药低剂量组、中药中剂量组、中药高剂量组、对照组和空白组。

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