试用分子动理论解释:
①墨水滴在水中后散开说明分子____ ;
②两表面磨平的铅块紧密接触后吊台灯说明分子间____ ;
③酒精和水混合后体积变小说明分子间____
Listen! I can hear an old man ____ (scream) for help in the next door.