故事潜质

A. 四层以上（含四层）的楼房
B. 三层楼房
C. 两层楼房
D. 平房

A. Yes, it is. Thank you.
B. Yes, it does. Thank you.
C. Yes, I will. Thank you.
D. Yes, I do. I like it.

A. 不变
B. 增大
C. 减少
D. 不—定增大或减少