单眼运动视差是指（）不动，而（）与（）移动时，所给出一种强有力的深度线索。

补全对话（共5小题，计5分）
A: How long have you been playing basketball?
B:       小题1:    .
A: How long have you been playing basketball today?
B:       小题2:     .
A:       小题3:     .
B: Yes, I do.
A: Is this your first basketball marathon?
B:       小题4:     .       小题5:     .
A: I don’t like playing basketball. I like reading.

A. For five hours. B. Do you play basketball every day? C. Five hours ago. D. What about you? E. Since I was nine years old. F. Yes, it is.