题目

How I wish I to repair the watch! I only made it worse. A . had tried B . hadn't tried C . have tried D . didn't try 答案：B打开你的影集，你会发现，现在的你比童年的你长高了许多，你知道这是什么缘故吗？（ ）A．细胞分化的结果B．细胞分裂 细胞生长和细胞分化的结果C．细胞分裂的结果D．细胞生长的结果