题目

打开香水瓶盖，能闻到香味，这是因为分子（ ） A．很小B．有质量C．不断运动D．可分 答案：分析：根据分子的特点：在不断运动、分子之间有间隔、分子的质量和体积很小等考虑本题． 解答：解：由于分子是不断运动的，打开香水瓶盖时，香味的分子通过运动运动瓶外，分散到周围的空气中．所以，能闻到香味．与分子的大小、质量、能否再分无关．所以，A、B、D错误，C正确． 故选C．情景交际，选择适当的选项补全对话。a.What can I do for you?　　b.I'm going to England for my holiday.　　c.You are welcome.　　d.With pleasure!　　e.What should I call people there?　　f. It's very kind of you.　　g. And you mustn't talk loudly in public places.A:Hi, Peter! Where are you going for your winter holiday?B:Hi, Bill! Can you tell me some rul es and customs in England?A: First, you should drive on the leftside of the road.B:OK!What's the next?A: B:I see.Is there anything else?A:It's not polite to ask personal questions, like “How old are you?” and “What'syour salary (薪水)?”B: A:You can call them Mr, Mrs, Ms or Miss before their family name.B:Great.Thanks very much.A: