I went to Grand Canyon (大峡谷) National Park in July 2012 for the first time 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, and people.

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

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

My favorite part of my job is 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 think it looks like a painting.

Being a park ranger requires a 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. Nearly 5 million people visit Grand Canyon National Park every year.

Park rangers must also be prepared 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. Believe it or not, I also help protect people from monkeys. It is not allowed to feed animals in national parks. But sometimes, visitors try to feed monkeys.

Beijing is the capital of China. It is a very 1 city. Lots of people live and work there. It usually takes them a long2to get to work.

My friend Zhang Yu works in a company (公司) in Beijing. The company is3from his home. He goes to work either by bus 4 by subway. When he gets up early, he5the bus to work. His home is next to the first stop of the No. 456 bus. It is easy for him to get a seat (座位)6 the bus. But he spends (花费) two hours getting to the7. When he doesn't get up early, he takes the subway. It takes8 about one hour to go to work by subway. But there are too9people on it. Sometimes Zhang Yu can't even(甚至)10!

It is Zhang Yu's dream to buy a house near his company. Can his dream come true?

Hello, I am Mary. I live in Chengdu. It's sunny and cool in my city now. I'm studying at home. My parents are shopping. What's the weather like in your city? And what are you doing?

    It was very cold, Amaya was warm in her house, thinking about an article she'd read at school. The article was about kids who 1 out their communities, and she thought it would be really cool to help her own town, Harvard.

    The only2 was that she wasn't sure how to help. In the article, the kids had grown food for people who needed food, but it was winter. She couldn't start a garden. Amaya was deep in thought when her mom said it was time to go shopping.

    As they drove along the road, Amaya saw a family wearing only light jackets. The cold wind blew 3 outside. How cold they must be! That gave her an idea! She could 4  winter coats, hats and gloves for people who needed them.

    She shared her idea with her mom, who thought it was great. But how would they 5 the idea to get plenty of winter clothing? Amaya decided to talk to her teacher, because then she could share her idea with her classmates at least.

    Ms. Monroe agreed when Amaya talked about her idea. They decided to call the 6  Hats in Harvard. Then they wrote a letter explaining the project. They also met with the headmaster during lunch time. He was excited about the idea, and said he would make sure copies (复印件) of the letter went home with all the students.

    They collected enough winter clothing in only one week. Then they left the clothes around two parks, so families who needed clothes could get them there. Three days later, Amaya and her mom went shopping again. She saw the same family that had given her the7for Hats in Harvard.  This time, though, the family wore some new coats, hats and gloves. Amaya felt 8 in her heart, and was very glad she could help others.

Children all around the world love Lego bricks(乐高积木). With those bricks, they can make anything they want. Lego bricks are a great toy(玩具) to play with. Now, for the first time, Lego makes Braille Bricks in English and French, making them a useful toy for blind(失明的) children. 

Lego Braille Bricks have dots (小圆点) on them. The dots are Braille. By feeling (感受) them, blind children can read words and numbers. They can also learn Braille when playing with the bricks. It makes learning easy and fun. 

Olivia is a blind girl, and she learns Braille when playing with the Lego bricks at her school. She loves to play with them and learn Braille at the same time. Her mother also plays with her at home and now she also knows Braille. 

Reece, a little boy, uses the Lego bricks to teach his family Braille. Now, his mother and sister know Braille as well. He says, "I feel so good. Because my loved ones learn something new and I am their teacher. So cool!"

Lego makes its colourful bricks useful. Let's thank it for bringing a new way of playing and learning!