"Listen carefully to what I say," the time traveler said, "I shall tell you something that you will not agree."  

 "Why will we not agree?" I asked.

 "Because the science and mathematics you know are not correct,"  he said. "You believe there are only three dimensions(三维空间)-length, breadth(宽) and thickness." 

 "There is nothing to argue with that, " the youngest member of our little group said.

 "Exactly!"  the time traveler answered, "But there is also a fourth dimension - time."   

 "We all know about time, " another member of the group said. "Time passed."

 "I do not agree,"  the time traveler said, "Length, breadth and thickness do not pass. They stay in the same place in space.  We move about them. I can prove that time is the same. It does not pass. We move in time the same way that we move in breadth, length and thickness."

 None of us believed the time traveler, and we argued with him for many hours.

 "If we could travel back in time,"  the scientist said, "We could do things to change the future." 

 "If we could travel forward in time," the doctor(博士) said, "we could do things that change our present." 

 The time traveler smiled, "It is clear," he said, "that there is only one way I can show you that I am right. We must do an experiment. Please wait here." 

 He left the room and soon returned, carrying what looked like a clock.

 "This is a model of a time machine. It took me two years to make it," the time traveler said. "I want all of you to understand that when I start the machine, it will immediately travel in time and disappear from the present." 

 He turned to the youngest of all. "Give me your hand," he said.

 The young man put out his hand. The time traveler took it and placed it on the machine. Immediately, there was a sudden wind, and the little machine disappeared.

 I was certain this was not a trick, but the doctor was not so sure.

 "Are you asking us to believe," he said, "that the machine is now in a different time?" 

 "Certainly! In my laboratory, a full-size machine is almost complete. As soon as it is complete, I shall send myself on a journey through time. Would you like to see my machine?"

 "Are you serious about this?" the doctor asked.

 "I have never been more serious about anything," the time traveler said, "Come." 

We followed him to his laboratory. There, we saw the actual machine, not quite complete, but large enough for a man to sit in.

      There were three big fish in the lake. One of them, Demo, was wise; another one, Jimmy, was half-wise; Martin, the third one, was stupid.

Some fishermen came to the bank of the lake with their nets. The three fish saw them.

      Demo decided at once to leave, to make the long and difficult trip to the ocean. He thought, "I won't discuss with these two about this. They love this place so much that they call it home and will stay on. How silly they are! They still haven't realized we are in great danger now. Their ignorance will cost them their lives."

      Seeing the wise fish had left, Jimmy thought, "My guide has gone and now I've lost my chance to escape." He felt sorry for it and then thought, "What can I do to save myself from these men and their nets? Perhaps I should pretend（假装）to be already dead, giving myself totally to the water." So he did that. He went up and down with the water, helpless, within arm's reach of the fishermen.

      "Look at this! The best and biggest fish is dead." One of the men lifted him by the tail, and threw him up on the ground. He rolled（滚动）over and over and moved secretly toward the water, and then, back in.

      The third fish was aimlessly jumping about, trying to escape with his speed and cleverness. The net, of course, finally closed around him, and as he lay in the hot frying-pan bed, he thought, "If I get out of this, I'll never live again in the limits of the lake. Next time, the ocean! I'll make it my home."

    My husband Jack and I went to visit a friend in hospital last week. Suddenly, Jack's mobile phone rang, it was my mother calling from my home. She asked if I had lost my phone. I checked my bag. It was gone!

I used Jack's phone to call my number. A boy answered it. "I found your phone in the mall!" he said, excitedly. "I'm Rhys. I have been trying to find you, but because it was getting late, I decided to leave." He gave me the address of a coffee shop near his home.

    Later that evening, I went to meet him there. I was afraid to go alone, worrying he was a cheater(骗子). So Jack came along. After driving 10km, we got to the coffee shop.

As soon as I saw him, my worries were gone. Rhys was just a young boy. "How did you tell my mum?" I asked. He explained that when he found my phone by the roadside, he started calling people in my contacts list(通讯录), starting with the letter A. He called Adam, one of my friends and Adam called my house.

    I was happy to get my phone back with all the phone numbers, messages and photos in it. I thanked Rhys and offered him some money, but he refused. He's really an honest boy.

    On 26 February, I got an email from my friend David, asking me to go to Tanzania to train their software engineers. The company is located in Dares Salam, a beautiful coastal city to the west of the Indian Ocean. I stayed for about two weeks in that city last time I was there. During my stay there, David took me to the nearby beach and we had a wonderful walk along the coast which had left a deep impression on me. I was impressed by the ocean water and the deep blue sky.

    After more than 19 hours of air travel, I was finally here at Dares Salaam Airport. The temperature here was high as usual- over 30 degrees. I felt short of breath because of the unbearable heat in this tiny hall. When I finally got my turn, I handed my passport to the officer in front of me, He had a close look at my passport. Then he asked the purpose of my stay, I told him I just wanted to travel here.

    "Where do you want to visit?" he asked again.

    "Dares Salsam."

    "What's your job?" he asked.

    "I'm a software engineer.

I will never forget this experience that I had. I still love this country.