A VISIT TO THE MOON①
Last month I was lucky enough to have a chance to make a trip② into space with my friend Li Yanping，an astronomer.We visited the moon in our spaceship！
月球之旅
我的朋友李彦平是一位天文学家，上个月我有幸得到一个机会同他一起去太空旅行。我们乘宇宙飞船参观了月球！
[助读讲解] ①名词visit后接to，意为“到……的旅行”，to为介词。②have a chance to do sth.有机会做某事。
Before we left，Li Yanping explained to me that the force of gravity(万有引力) would change three times on our journey and that the first change would be the most powerful③. Then we were off④.As the rocket rose into the air，we were pushed back into our seats because we were trying to escape the pull[拉(力)] of the earth's gravity.It was so hard that we could not say anything to each other.Gradually the weight lessened and I was able to talk to him.“Why is the spaceship not falling back to the earth? On the earth if I fall from a tree I will fall to the ground.” I asked.“We are too far from the earth now to feel its pull，”he explained，“so we feel as if there is no gravity at all.When we get closer to the moon，we shall feel its gravity pulling us，but it will not be as strong a pull as the earth's.” I cheered up immediately and floated(漂浮) weightlessly(失重地) around in our spaceship cabin(船舱) watching the earth become smaller and the moon larger⑤．
