题目

As the busiest woman in Norton, she made ________ her duty to look after all the other people’s affairs in that town.     A. it                            B. this                          C. that                         D. one 答案：A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”