衣着素净( )
A:颜色单纯;不艳丽
B:本色;白色
C:本来的;原有的
D:素来;向来
A
Lost:A pencil box
It is blue.My name is Jenny Brown.My phone number is 236-9878.
Found:A watch
Is this your watch?Please call Dave. Phone number :236-8567.
Tina,
A nice black bag is in the school library .Is it yours? Ask Miss Li for it.---Jack.
A nice green notebook is in Classroom 2B.A photo of a girl is in it.Is it yours?E-mail me at Gina23@163.com.
某班同学进行登楼比赛,看谁做功快。甲、乙、丙三位同学记录了自己从一楼跑到确定的楼层所用的时间,并填入下面表格中,然后将有关的物理量也记录在下面的表格中。
学生
学生体重
(牛)
楼梯的高度
(米)
登楼做的功
(焦耳)
所用时间
(秒)
甲
500
3
5
乙
1500
7.5
丙
600
6
12