找出不同类的单词.
A:men
B: mice
C:music
D:children
肾脏的主要功能是:____,膀胱的主要功能是____,输尿管的主要功能是____,尿道的主要功能是____。
I am……I can……I like……I'm good at……
My name is Lisa. I'm tall and thin. I can read and write. I like Chinese very much. I am good at writing. I want to be a Chinese teacher in the future. I want teach children in a school. I love children.
重10N的物体,只在重力和竖直向上拉力F的作用下,竖直向上运动.拉力F与时间t关系如图,下列说法正确的是( )