题目

下列分子中所有原子都满足最外层8电子结构的是A、光气（COCl2）                   C、六氟化硫B、二氟化氙                       D、三氟化硼  答案：A解析: I don't know if the headmaster ________ today. Please call me when he ________.A.comes, comesB.will come, will comeC.will come, comesD.comes, will come