题干
Look at the light, it's yellow.
A：Stop and wait at a red light.
B：Slow down and wait at a yellow light.
答案(点此获取答案解析）
B
Look at the light, it's yellow.
A：Stop and wait at a red light.
B：Slow down and wait at a yellow light.
在两坐标轴上的截距都是非负整数的直线有多少条 （ ）
