题目

如图，AB是⊙O的直径，BC是⊙O的切线， D是⊙O上一点，且AD∥OC （1）求证：△ADB∽△OBC （2）若AB=2，BC=，求AD的长（结果保留根号） 答案：（1）∠ADB=∠ABC=90°∠DAB=∠C0B   （2）AD= 阅读短文，根据短文内容完成表格，每空一词。 　　I have always loved cars. After graduating from college, I got one, which I regarded as(把……当作)my favorite friend.I called it Victor. For the next three years, everything I did was connected with(与……有关)Victor. I liveda happy life. But because of money problems, I had to sell Victor. Then my life broke down. Without Victor, I was like a fish out of water. Three months later, with the encouragement of my friends, I decided to start a new life. I tried and made it. Everything went well again. Losing my car made me grow up. I have learned that life won’t always go our way, but we can chose to be positive(积极的)and make the best of it. 1.______ of the car                   Time of getting the car        Reason for 3.______ the car to someoneFeelings of losing the car     Improvement from the experience Victor                                       2.______ graduating from college                    Because of money problems                    Like a fish out of 4. ______5.______ won't always go our way.We can be positive.