— Could you tell me _____? I must find him.
— Sorry, I have no idea. But he was here just now.
A：where Tom was
B：where Tom is
C：if I can phone Tom
D：where has Tom gone
下列图形中有稳定性的是（ ）
方程x﹣2=x（x﹣2）的解为（ ）
下列四幅区域示意图中，比例尺最小的是（ ）
资源跨区域调配、产业转移、人口迁移都是区域开放性的体现。
诗、文名句填空
