题目

 She was looking for her bicycle key _______ she thought she might have put it. A. wherever                                 B. whenever              C. at which                                 D. no matter where 答案：A根据你的生活和学习经验，以下不能说明分子间有空隙的是（　　）A．打气筒能将气体压缩B．海绵能吸水C．物体有热胀冷缩的现象D．酒精和水混合后，总体积变小