生物兴趣小组对青蛙的生殖和发育过程进行了观察和探究，以下叙述不正确的是    [ ]

A．雄蛙鸣叫是求偶行为      

B．青蛙产下的卵块中含有受精卵   

C．小蝌蚪用鳃呼吸          

D．成蛙水陆两栖，用鳃和皮肤呼吸

The schema theory is an important element in ______ , which is "action-based", more concerned with the process of learning than what is learnt.

A. Brunner's method


B. Ausubel's theory
C. Kelly's theory



D. Piaget's theory