"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.

根据材料内容选择最佳答案。并将其标号填入题前括号内。
    Julio loves to visit his grandmother. He doesn't get to visit her very often because his family lives in a city that is six hours away .His grandmother lives in a big wooden house on a farm. It is old and looks as if it has secret hiding places.
    On the third Sunday of June, Julio's parents took him to his grandmother's. Since it was summer vacation, he was going to stay at grandmother's for a whole summer. Hid cousins Mario and linda would soon be arriving. They would also be staying at their grandmother's this summer.
    A big porch (走廊) wrapped （缠绕）around two sides of the house. Julio sat in the porch swing （秋千）. He could see the trees that circle the house .They had been planted as a windbreak (防风林). They protected the house from the wind and blowing dirt. The house was in the middle of a large flat field.
    Julio watched the dirt road that led to the house. He couldn't wait for his cousins to get there .Mario was his age ,and Linda was a year younger .They had fun together .Last summer they spent one whole morning making a fort out of sacks of seed （装种子的麻袋做成的堡垒）.Then Uncle Henry took them on a tractor ride.
    Julio remembered another time with his cousins. They had gone out to explore the fields. Julio touched an electric fence and got a shock. Then they found an old snake skin. Nothing like that ever happened at his own home!
   Julio could smell the dinner that his grandmother was cooking. It made him hungry.
    Finally he saw a cloud of dust coming up the road.“They're here! They are here!”He shouted.

Which Is More Useful?

    Thomas is in Grade Two now. He goes to school from Monday to Friday. After school he must do some housework. He helps his parents on the farm(农场) on Saturdays and Sundays. So he doesn't have any time to play football in the daytime. He often plays with his friends in the moon(月亮).

    It's five in the afternoon. School is over. Thomas goes home and cooks for his family. After dinner he sees his friend Paul near his house and asks him to play football. The boy looks at the sky and sees the moon. Then he asks, "Which is more useful, the sun or the moon?"

    "I think the moon is," says Thomas. "We need light(光线) in the evening, but we can not see the sun, but the moon!"

C

    Have you ever wanted to achieve something really amazing in life? Well, Greg Mortenson wanted to climb a mountain, but he ended up helping thousands of people to have a better life.

    Greg's story began with failure. In 1993, he set out to climb K2, the world's second highest mountain. But Greg never made it to the top. After five days, he stumbled (踉跄) into the village of Korphe in northern Pakistan, injured (受伤) and hungry. The kind villagers there looked after him for several days.

    Greg saw that the villagers were very poor and hungry, and some of them were ill. Also, the village school didn't have a roof (屋顶) and the children wrote on the ground with sticks. Greg knew he wanted to do something to help. "I'll build you a school, " he told the villagers. "I promise."

    Greg went back home to the USA to raise money for the school. He even lived in the car to save money! Finally he went back to Korphe and built the school. But this was just the beginning of something bigger! Since then, Greg's organization has built around 80 schools and run many others in Pakistan and other countries, too.

    Greg hasn't finished yet. He does many other things to help people in poor countries. He has got many prizes, but it's the smiles of the children he has helped that make him happy!

    Greg has just written a best­selling book about his story called ThreeCupsofTea. It's an interesting and exciting book which tells us what ordinary (普通的) people can do with courage and determination (决心)!

    A man once visited a temple that was still being built. He saw a sculptor making a sculpture(雕塑).As he watched the man work on the sculpture, he noticed that there was a similar sculpture lying nearby.

    He felt very strange and asked the sculptor, "Why are you making two same sculptures? Do you need two to put in different places?"

    "No, "the man said without looking up, "We need only one, but the first one became damaged before I could finish it, so I'm making a new one."

    The visitor picked up the damaged sculpture and examined it. But he couldn't find anything wrong with it.

    "Where is the damage?" he asked.

    "There is a scratch(擦痕)on the sculpture's nose." the sculptor said while continuing his work.

    The man then asked, "Where are you going to place the sculpture?"

    The sculptor replied that it would be placed on a 20﹣foot﹣high platform(平台)."If the sculpture is up that high, who is going to notice that there is a scratch on the nose?" the man asked.

    The sculptor stopped his work, looked up at the man and said, "I will know it".

    The sculptor chose to stick to a high standard of excellence in his work. Even if other people didn't notice it, it mattered to him that his work should be of the best quality. This is an attitude we should all work hard to keep.