—I think you went to a party.
A:where did I go
B:how I enjoyed myself
C:what I did
有许多日常用品应用了物质的物理属性,下列说法不正确的是( )
人体的运动系统由什么组成( )
甲
乙
丙
丁
x¯
7
8
s2
1
1.2
1.8
如果要选出一个成绩较好且状态稳定的组去参赛,那么应选的组是( )