题目

下列说法中正确的是A．开普勒发现了行星运动定律B．牛顿较准确地测出了引力常量的数值C．经典力学既适用于宏观世界，也适用于微观世界D．经典力学既适用于低速运动，也适用于高速运动  答案：A解析:  I have invented robots which improve the work of cars. My love of making things began______I was a kid. I really became excited about inventing after I learned about Thomas Edison.One day in fourth grade, our______gave us a project in class. We had to write to a company and learn about the products. I thought and thought. _______I chose the Thomas A. Edison Company. Soon after, the company sent me a book about the life of Thomas Edison. How I enjoyed reading and re-reading about his ____! I like the recorded sound and the electric light most. The inventions were clearly printed on my brain.My dad noticed my interest in inventing and______me. He showed me how to turn my ideas into plans and then into new things. Once, I surprised my dad______a model plane I made. Later, we found a______model plane in a store. I learned that different inventors often invent similar things. It is not unusual for this to happen. I also learned that not all great ideas______. Failure is a common part of the inventing.As my father and I worked together, I began to realize that my dad was quite an inventor himself. He was always______a better way to do a simple job. His guiding hands, together with my______ in inventing, led me to become an engineer and an inventor. Of course, I also thank Thomas Edison. He is my hero.【1】A. beforeB. afterC. whenD. until【2】A. parentB. teacherC. inventorD. engineer【3】A. EasilyB. FinallyC. SafelyD. Quickly【4】A. lightsB. projectsC. suggestionsD. inventions【5】A. mistookB. refusedC. choseD. encouraged【6】A. withB. aboutC. intoD. from【7】A. differentB. similarC. largeD. small【8】A. workB. failC. comeD. end【9】A. looking atB. looking forC. looking afterD. looking through【10】A. habitB. storyC. interestD. plan