With the rapid development of online teaching and learning system, Computer Aided Assessment (CAA), as a core problem , has been paid more attention to in recent years.
随着网络教学的飞速发展和推广应用，作为网络教学核心技术的自动批改技术是近年来讨论的热点问题。
Results (1) The expression of CAA gene was detected at early embryo development, and increased subsequently to a stable level.
结果（1）CAA基因在胚胎发育早期即开始表达，以后表达量逐渐增加至稳定。
Results (1) The expression of CAA gene was detected at early embryo development, and increased subsequently to a stable level.
结果（1）CAA基因在胚胎发育早期即开始表达，以后表达量逐渐增加至稳定。
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