8．青蛙个体发育的过程是

A．卵―蝌蚪―成蛙                                     B．卵―蝌蚪―幼蛙―成蛙

C．受精卵―蝌蚪―成蛙                              D．受精卵―蝌蚪―幼蛙―成蛙

  • 答案
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