选词填空。
bridge，afraid，year,village，between |
Her name is Carol Brown．She's a small____in Brown Village．Carol is eight____old．It's time for her to go to school but she can't go to school．Why?There's a river____Carol's village and her school．There's no ____．
Carol needs to go to school by boat．Carol is ____ to Cake the boat．So she can't go to school．Her dream is to have a bridge．Then she can go to school．
在体积不变的密闭容器中反应，达到平衡状态的标志是：
的同时生成2nmol
的物质的量浓度变化表示的反应速率比为2：2：1的状态