题目

写出下列元素的名称或符号 氮                 钠                 铝                  氯                 镁                 铁                 Ca                 Hg              答案：N  Na  Al  Cl  Mg  Fe  钙   汞一＿＿I use your dictionary?一Sure, here you are.A. MustB. MayC. NeedD. Should