A:CCl4的电子式:
B:MgCl2的电子式:
C:S2-的结构示意简图
D:中子数为20的氯原子:20Cl
关于苏联农业集体化方针的叙述,不正确的是( )
Our geography teacher told us to _____ more information about our city and share it next week.
I have a shirt. It's white.____