读下面的句子，体会句子表达了作者怎样的思想感情，写下来

①但是，聪明的，你告诉我，我们的日子为什么一去不复返呢？从这个句子，能体会到什么？

②像针尖上一滴水滴在大海里，我的日子滴在时间的流里，没有声音，也没有影子。 

作者把自己的日子比作(      )，把时间比作(     )

说明了什么？

假如你叫大明，收到了你的英国朋友Tony的来信，信中他很关心四川雅安地震后学生的情况。请你根据他的来信内容写一封回信，感谢他对灾区学生的关心，回答他的问题，并谈谈你的感受。
提示词语：thank you, care to， go on， government ，offer，encourage， brave　
Dear Daming,
I'm sorry to hear that a big earthquake happened in Ya'an, Sichuan. Some school buildings broke down in the earthquake and many students couldn't go to school. But I know the government is trying their best to help them. And Chinese people are so strong and brave that they aren’t afraid of anything difficult. Can the students go on studying now? Please tell me more about them.
I'm looking forward to hearing from you soon.
Yours, 
Tony
Dear Tony,
I'm glad to hear from you
Best wishes.  
Yours
Daming

I have got a new subject-physics this____  (学期)．