2.5：2=108=1.25=25÷20=125%；
故答案为：2，10，20，125．
Dear Bob,
My name is Rich. I’m fourteen years old. I’m 小题1:____ in a middle school. My school is nice and clean. There are 30 students in my class. It’s 小题2:today. My classmates and I are __小题3:__ a good time. It’s a nice place. The water _小题4:____ blue and clear. Many birds are flying over the sea. Many people are __小题5:____ in the sea. Some boys are _小题6:__ football. ___小题7:___ are ___小题8:___ and lying on the beach. A girl is drawing pictures on a chair. Another girl is ___小题9:_ photos. I’m 小题10:___ to you! What about you? I hope you can tell me.
Best wishes!
Rich
守护式保安服务的职责是什么？
