It's said that eyes are the windows of our soul. Beautiful and bright eyes not only show a good health but also make you look attractive. However, to have healthy eyes, you have to look after them properly. Your eyes need everyday attention.

    Pay more attention to your diet. First, eat food that is good for your eyes. They are fresh fruits and vegetables as well as fish, eggs and milk. Besides, a regular amount (数量) of Vitamins A and B2 should also be taken.

    A regular and sound sleep is a must. It relaxes the eye muscles (肌肉) and gives them the rest. Sleep not only helps the body to repair its tired tissues (组织). Usually, you must sleep for at least seven to eight hours every day. Loss of sleep can give you dark circles under the eyes.

    You must exercise your eyes every day. Blink (眨眼) your eyes at regular periods, which makes the eyeballs watery and gives them a good wash.

    We use our eyes in many unnoticeable and wrong ways. For example, if a small thing goes into our eye, we start rubbing (揉) it, which is wrong. Rubbing can cause damage to your eyes. Don't read or write in poor or bright sunlight. Always use sunglasses as sunlight can cause eye tiredness. Light should not shine directly in your eyes. Too much reading, writing, watching TV or working on the computer can also cause eye tiredness.

    The Great Wall of China is called the "Ten thousand Ii Great Wall" in Chinese. In fact， it' s more than 6，000 kilometers long. It winds its way from west to east， across deserts， over mountains， through valleys till at last it reaches the sea. It is one of the wonders of the world.

    The Great Wall has a history of over twenty centuries. The first part of it was built during the Spring and Autumn Period. During the Warring States Period， more walls were put up to defend the borders of the different kingdoms. It was during the Qin Dynasty that the kingdom of Qin united the different parts into one empire. To keep the enemy out of his empire， Emperor Qin Shihuang had all the walls joined up. Thus， the Great Wall came into being.

    The Great Wall is wide enough at the top for five horses or ten men to walk side by side. Along the wall are watchtowers， where soldiers used to keep watch. Fires were lit on the towers as a warning when the enemy came.

    It was very difficult to build such a wall in the ancient days without any modern machines. All the work was done by hand. Thousands of men died and were buried under the wall they built. The Great Wall was made not only of stone and earth， but of the flesh and blood of millions of men.

    Today the Great Wall has become a place of interest not only to the Chinese but to people from all over the world. Many of them have come to know the famous Chinese saying: "He who does not reach the Great Wall is not a true man."

回答下面5个问题， 每题答案不超过7个词。

    Connor Bloom had an amazing two weeks at Stanford University this summer. Eyery part of the experience was amazing. The particle accelerator(粒子加运器), the chance to meet like minded kids from across the world? You guessed it. . .

    Bloom, 14, an eighth-grader at Whitefish Middle School in Montana, US, participated in a special camp at Stanford University. The camp holds many different classes for students who want to challenge(挑战)themselves.

    When Bloom looked online and saw that Stanford was to hold the "Gified Youth" program, he signed up(报名). "I like physics and math. 1like to study new things and find out everything about them, "said Bloom. " That's what made me want to sign up. "

    He handed in his test scores from fifth grade on, wrote an article and got recommendation(推荐)letters from teachers. Bloom stood out among thousands of students and got the invitation.

    Bloom had a great time with 86 students from all over the world. On the first day, they learned college-level math. Over the next four days they got to work in laboratories(实验室). They even touched a dead body to learn about how the human body works.

    In the second week, they saw the school's particle accelerator, "I never saw such a machine before, "said Bloom. " But it was just the mental workout(智力测验)1 was hoping for. "

    Bloom did more than just study for two weeks. He made friends with students from China, India and Japan. He worked together with other students in class to learn better. He spent his free time with kids who were also music fans.

    "Once we got to know each other, we helped each other out, "he said. " We learned a lot from each other. that's for sure. "