题目

如图，线段两个端点的坐标分别为、，以原点为位似中心，将线段放大得到线段，若点的坐标为，则点的坐标为（）A. B. C. D. 答案：【答案】B【解析】直接利用位似图形的性质得出位似比，进而得出A点坐标．解：∵以原点为位似中心，将线段CD放大得到线段AB，D（2，0），点B的坐标为（6，0），∴，∴位似比为，∵C（1，2），∴点A的坐标为：（3，6）．故选B．填空stay, real, home, have, boring, take, spend, interesting, place, visit t also, cookI went on a trip with my mom last summer. We 1. my mom’s hometown(家乡）—Tampa.To me，Tampa is not only the most beautiful place in Florida, but one of the most beautiful 2. in America.It’s 3. a nice place for a vacation with the family.My mom and I 4. at my grandpa's house. My grandpa is over 80 years old, but he is still very healthy. He 5. breakfast for us every morning. Then he showed us around Tampa.We went to the beach. My mom really enjoyed 6. time on the beach. It was very hot. So we swam a lot. We had lots of fun there.We also went to Clearwater. It’s not far from Tampa. It’s 7. a beautiful place. We saw some shows there. They were very 8. and exciting. And we 9. a lot of pictures there.I 10. a good time with my mom last summer. I will never forget the trip.