在一密闭容器中进行如下反应:2SO2(g) +O2(g) 2SO3(g) ,已知反应过程中某一时刻SO2、O2、SO3的浓度分别为0.2mol/L、0.1mol/L、0.2mol/L,当反应达平衡时,可能存在的数据是
The children loved their day trip, and they enjoyed the horse ride ______.
Progress______ so far very good and we are sure that the work will be finished on time.
Charles was alone at home, with_______ looking after him.
It is often ______ that human beings are naturally equipped to speak.