A:1s22s22p63s23p2→1s22s22p63s23p1
B:1s22s22p63s23p3→1s22s22p63s23p2
C:1s22s22p63s23p4→1s22s22p63s23p3
D:1s22s22p63s23p63d104s24p2→1s22s22p63s23p63d104s24p1
- Excuse me, can you tell me _________?
- Sorry, I'm a stranger here.
73÷9____8 6×8____48
综合性学习:
开学了,同学们在新的学校,认识了很多新朋友。请完成下列题目:①请写出与友情有关的成语两个 、 。②请写出与友情有关的古诗词一句: , 。