We got to another planet and we were on our way back to the earth.

    Suddenly, a UFO appeared and it made our spacecraft land on another planet. On the planet, a very strange-looking alien met us. He took my friends and me to see its master. All the aliens had four eyes, two heads and six legs. They had a white body and no hair.

    The planet looked like a prison (监狱). We were scared and they gave us some food. No one ate the food.

    The next day, they gave us a long list of things to do, but we couldn't understand them at all. They put us in a small room. After that, they did experiments(试验)on us. A few of us died and they put the rest of us back into the room.

    One day, the alien who brought us to our room forgot to lock the door, so we ran away. Soon we flew back to the earth in our spacecraft.

We told people about our experience but no one believed us! After that, I never go into space again.

    George Stephenson was born in 1781 in a poor family. He had to start work when he was only eight. When George was fourteen, he became his father's helper. He spent a lot of time learning about engines. On holidays, he often took one engine into pieces and studied each piece carefully. Soon he became a very good worker though he could not read or write.

    He began to learn the English letters when he was seventeen years old. Every day after he did twelve hours of hard work, he walked a long way to have lessons from a young teacher.

    On his eighteenth birthday, he wrote his own name for the first time in his life. George invented many things in his life. The train was the greatest one among them. Today when we watch or take trains from one place to another, we will think of this great man—George Stephenson.