It was a beautiful spring（春天） morning. There wasn't a cloud in the sky, and the sun was warm but not too hot. So Mr. Andrews was surprised when he saw an old man at the bus-stop with a big umbrella in his hand.

    Mr. Andrews said to him, “Do you think it's going to rain today?”

    “No,” said the old man, “I don't think so.”

    “Then are you carrying the umbrella because the sun is too hot?”

    “No, the sun is not very hot in spring.”

    Mr. Andrews looked at the big umbrella again, and the man said, “I am an old man, and my legs are not very good, so I really need a walking-stick (拐杖). But people will say, 'Look at that poor old man', and I don't like that. When I carry an umbrella in fine weather, people only say, 'Look at that stupid（愚蠢的）man'.”

    Peter wanted to travel, especially to English-speaking countries such as America and Australia. But he knew that he had to improve his English, so he went to Green Language School to take English lessons. Peter worked very hard at his English. At last, he became ill. Every evening he went to bed, closed his eyes but he stayed awake(醒着的).

    Peter was worried so he went to see the doctor." I can't sleep at night. What should I do, Doctor?"

    "I have a piece of advice, "said the doctor. "Try to count(数)numbers. When you count up to 1,000, you'll be asleep."

    The next day Peter returned to the doctor's office." Did you try my advice？And are you better today?" asked the doctor.

    Peter wasn't happy. "Er, I tried counting from one, two...up to four hundred and twenty-one, and I felt sleepy. Then I got up and drank some coffee. Then I went on counting up to 1,000. But I still couldn't be asleep."

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I went to Grand Canyon (大峡谷) National Park in July 2012 for the firsttime and I knew I wanted to work there as a park ranger（管理员）. Park rangers protect the park's animals, plants, land, buildings, andpeople.

Now, as a park ranger forGrand Canyon National Park, I share the science, history and beauty of this parkwith thousands of visitors from around the world.

National parks are like outdoormuseums. Park rangers have all kinds of jobs, depending on where they work and whatthey studied during college. I teach school field trips（实地考察）, work at visitor centers and helppeople stay safe during their visit.

My favorite part of my jobis showing children their first look at the Grand Canyon during school field trips.Children are often amazed at the canyon's size and colors. Sometimes, they thinkit looks like a painting.

Being a park ranger requiresa lot of energy. I walk several miles and talk with hundreds of people each day.Park rangers must enjoy working with people and speaking in front of groups. Nearly5 million people visit Grand Canyon National Park every year.

Park rangers must also beprepared for any situation. Recently, I broke a traffic jam(堵塞). It was caused by a huge elk（麋鹿）standing in the road. Elks can become dangerous when they get scared,so I asked visitors to stop their cars and take pictures from far away. Believeit or not, I also help protect people from monkeys. It is not allowed to feed animalsin national parks. But sometimes, visitors try to feed monkeys.