已知两直线被第三条直线所截，∠1的同位角为48°，则∠1的内错角等于多少度？∠1的同旁内角等于多少度？
解：48°；132°。
我国夏季最低气温出现在青藏高原，形成这种现象的主要因素是 [ ]
A、夏季风
B、纬度位置
C、地势
D、海陆位置
The method of constructing a project schedule network diagram that represents activities and connects then to show the all dependencies is known as （）.
A．precedence diagramming method
B．activity list
C．arrow diagramming method
D．schedule network templates
