题目

When I was growing up, I had an old neighbor Dr Gibbs, a good doctor. When Dr, Gibbs wasn't ______lives, he was planting trees. His house covered an area of ten acres, and his life's_____was to make it a forest.The good doctor had some interesting theories _____plant care and growth. He never_____his new trees, which went against traditional practices. Once I asked why, he said that watering plants did _____to them so that their later generation would grow weaker and weaker. So you had to make things_____for them and removed the______early on. He talked about how watering trees made for______r如图，四边形ABCD是⊙O的内接四边形，∠C=130°，求∠BOD= °．