When you watch 3D movies or TV, you have to wear a special pair of glasses. The 3D glasses make the images from the screen look like they are there in the room with you.

    Three-dimensional, or 3D, means having three dimensions（维度）: width, height and depth. 3D technology（技术） is based on the way the human brain（大脑） and eyes work. Because the pupils of a person's eyes are about 6.5era apart（分开）, when we look at something, each eye sees,it from a different angle（角度）. Our eyes send the two images to our brain, and the brain puts them together. The small difference between the image from the right eye and the image from the left eye allows us to see depth.

    When we view pictures and television in two dimensions, each eye gets the same information. That is because the image has no real depth, and there is only one of viewing it. So the goal of 3D technology is to get a different image into each of the viewer. It uses two film projectors. One projects a left eye image and the other projects a right image. The 3D glasses allow us to see a different image in each eye.

    While watching 3D films, we feel that we are in the same environment as the things we're watching. However, it also has its disadvantages. The 3D glasseswork by controlling the amount of light that reaches the eyes. It makes the screen look darker. What's more, people with eye problems may get headaches if they spend too much time watching 3D movies，because their brains need to work harder to "read" the images.

    The story is about a young student. She worked very hard at her lessons. She worked so hard that she became ill. She couldn't go to sleep at night. When she got up the next morning, she felt very tired.

    So she went to see a doctor. Hearing the student's words, the doctor said, "You are too stressed out. You must eat more food like vegetables and tofu. Besides you can try to count(数) numbers when you are lying in bed. By the time you reach one thousand, you will be asleep. I'm sure of it."

    The next day, the student came to see the doctor again. "Well," said the doctor, "how are you feeling today?"

    The student still looked tired. "Yes," she said, "I tried to count one, two, three, four... up to one thousand. But when I reached five hundred and sixty, I feel sleepy. I had to get up and drink some coffee so that I could go on counting up to one thousand. But then I still couldn't be asleep."

    Li Ping is going to England. He wants to know something about English people. One day he sees an English girl in the street. Then he comes up to her.

    “Excuse me, may I ask you some questions?”

    “Of course you may.” answers the girl politely.

    “I'll go to London. What should I notice when I'm talking with English people in London? ”asks Li Ping.

    “Well, don't ask a woman how old she is and…”

    “But how old are you? ”Li Ping stops the girl and asks suddenly.

    “I…”The girl gets angry.

    “Why do you get so angry?”asks Li Ping. “Now we are in China, not in England, you see”

    Once Mr. King had a cat, and he loved it very much. He called it "Sky", because he thought "Sky" was the strongest name in the world.

    One day he had a meal at a restaurant with his cat. He met his old friend. He told him about his lovely cat and its name. His friend said, "How foolish you are! Sky is not the strongest thing in the world. My cat is called „Cloud' because cloud is stronger than sky." After hearing this, Mr. King called his cat "Wind" because he thought wind was stronger than cloud.

    After a few days he suddenly thought that "Wall" was stronger than wind. And "Mouse" was stronger than wall. So he went to his friend to ask for an idea. His friend said, "Don't you think Cat is stronger than mouse？" "Yes, but..."

    The man thought and thought and then decided his cat's name had better be "Cat" because a mouse was always afraid of a cat. Don't you think Mr. King is very silly or funny？