在统计图中,____统计图能反映各占总数的百分比,____统计图能反映数据的变化趋势.
下列图象中反映物体做匀速直线运动的是( )
人体内完成受精的场所是( )
We believe the public services in our city are good, and we are working hard to make it even .
理论上,垂直自然带与相应水平自然带存在如图所示的对应关系,读图回答下题.
- Who is he?
-He's my father.