A: I’m not sure what Dr. Tyler wants us to do.
B: ().

A. So you didn’t come to the class yesterday

B. I’ll make a call to him if you don’t mind.

C. Oh, you’d better guess it out by yourself.

D. If I were you, I’d write and ask Dr. Tyler to look at it.

不能准确地判断物品的位置，伸手取物时或未达该物而抓空，或伸手过远将物品碰倒。患者可能有()

A．图形背景分辨困难 

B．空间定位障碍 

C．视空间失认 

D．结构性失用 

E．地形定向障碍