题目

G__________ from York University this year, Sara got a degree in psychology. 答案：Graduating     下列变化过程中，只破坏共价键的是(　　) A．I2升华                             B．NaCl颗粒被粉碎 C．HCl溶于水得盐酸                   D．从NH4HCO3中闻到了刺激性气味