呼吸作用最重要的意义在于( )
A:呼出二氧化碳
B:为生命活动提供能量
C:消耗氧
D:分解有机物
已知△ABC的两个顶点A(﹣10,2),B(6,4),垂心是H(5,2),求顶点C到直线AB的距离.
把下列词语补充完整。
奔跑____ 无遮____ 扑面____ ____清风
A. sofa B. chair C. table D. phone E. fridge
This is my living room. My ____is near the window. The ____is near the door. The____is under the picture. The ____is on the table. Where is the cat? It's on the____