题目

When I was a twelve-year-old newspaper boy, an old lady who was my customer lived near my house. I have even forgotten her name. On a winter afternoon, I was playing with my friend near the old lady's backyard. I found a perfectly smooth rock and threw it out, but the stone hit a small window of her house. Suddenly, I saw the old lady standing behind the window. We knew we were in trouble, and ran away quickly. We were scared about that we would be caught and didn't worry about the old lady with the broken window in winter.The next morning, she was still greeting me with a smile when I gave he在北方的冬季，常见的几种物态变化现象中，属于凝华的是（　　）A．室外冻冰的衣服变干B．房间窗户玻璃的内表面出现冰花C．湖面结了厚厚的一层冰D．正在跑步的人，口中呼出“白气”