给下列句子加上标点符号。
①她热情地问我____想变点儿什么____
②小鱼来了____在荷叶下嬉戏____雨点来了____在荷叶上唱歌____
____
根据句意及首字母提示,填写单词(1)I’d like to have two apple p____ .(2) Boys, stop t____ stones at the poor dog.(3)The dish Mom cooked p____ a nice smell.(4)One c____ means a hundred years.(5) In a____ times, it was hard for people to travel around.
关于扩散现象,下来说法正确的是( )