题目

 My daughter told me that_____ of her homework had been finished.     A .two-fifth            B. two-fifths        C. second-fifth D. second-five 答案：B. 考查分数的表达方法。 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”