题目

When I was about 12, I had an “enemy”, a girl who liked to point out my shortcomings(缺点）. Sometimes she said I was thin. Sometimes she said I was lazy. Sometimes she said I wasn’t a good student. Sometimes she said I talked too much, and so on. I tried to put up with(忍受)her as long as I could. At last, I became very angry. I ran to my father with tears in my eyes.He listened to me quietly, and then he asked, “Are the things she said true or not? Mary, didn’t you ever wonder what you’re really like? Go and make a list of everything she said and make the points that are tru15．下列变化过程中，只破坏共价键的是（　　）A．HCl溶于水得盐酸B．NaCl颗粒被粉碎C．I2升华D．NH4Cl晶体加热分解