题目

 Do you know __________? A. what will he do next       B. what he will do next C. where does he usually go   D. where might he go 答案：B在标准状况下，称量一个充满氧气的容器，质量为66.4 g，若改充氮气，其质量为66 g，则容器的容积为（ ）A.4.48 LB.11.2 LC.2.24 LD.5.6 L