Last month I made a trip into space with my friend Li Yanping. We visited the moon in our spaceship. Before we left, Li Yanping explained 【小题1】 me that the force of gravity would change three times on our journey and 【小题2】 the first change would be the most【小题3】( power). Then we were off. As the rocket rose slowly into the air we began to feel 【小题4】 pull of the earth, which is 【小题5】 we called gravity. At first it pushed us 【小题6】 hard back into our seats that we could not say anything to each other.【小题7】(gradual) the weight lessened and I was able to talk to him. 【小题8】 we got closer to the moon, we felt its gravity pulling us but it was not as strong a pull as the earth’s. I cheered up immediately and floated【小题9】(weightless) around in our spaceship cabin【小题10】(watch) the earth become smaller and the moon larger.