根据上下文提示补全对话。
A: What's on the farm?
B: ____ ____ a lake and some trees.
A: Is the farm ____?
B: Yes, it's very big.
A: ____ ____ an elephant on the farm?
B: Yes, there is. It's very strong.
A: Is there a house?
B: No, there ____.
陪____ 输____ 尊____ 涌____ 暖____ 遇____
部____ 愉____ 遵____ 桶____ 缓____ 寓____
光源到橡皮的距离L/cm
5
10
15
20
25
影子的长度H/cm
6
4.5
3.7
3.1