看图,读一读,选择适当句子补全对话。
A. Would you like some milk?
B. We can read books at home.
C. Good idea.
D. How is the weather in winter?
E. Why don't you play football?
甲、乙二人在操场的400米跑道上练习竞走,两人同时出发,出发时甲在乙的后面,出发后6分钟甲第一次追上乙,22分钟时甲第二次追上乙,假设两人速度都保持不变,并继续保持竞走状态.