I was walking along a busy road when I noticed a young man standing near the crossing selling toys.1 I would hurry past such sellers. But I found this young man was 2 so I stood for some time without crossing the street. I wanted to see how he sold his things.

    Soon, a young mother with a little girl came by and the child set 3eyes on one of teddy bears. The mother asked for the4 and it was only one dollar. She 5 out a 10-dollar note from her handbag and told the young man that she was giving him 10 dollars and wanted the6 back. I was wondering how he was going to do it. He told the young mother to put the money in the bag 7 around his neck and take out her change.

    I realized that this young man depended on believing people not to cheat him. There was no way for him to know 8 someone would take out more than they should have. I was so 9 I bought a car model from him that I did not need. As I walked down the street, I gave the car model to a kid walking with his father.

    I kept thinking that the world would be a better place if we could all learn to 10 others more, like the young blind street seller.

    Every day after school, Jack locked himself in his bedroom. He was working on a(n)1project. He didn't tell anyone what he was doing, not even his best friend Larry.

    Jack finally 2. He made a robot. It looked like Jack. The robot had orange hair and wore glasses. The robot and Jack both talked in a special voice. "Life is going to be 3 now!" shouted Jack. "I will send my robot to school while I will 4 at home and play."

    The next morning the robot ate breakfast. Then, he took the bus to school. After school, the bus sent the robot back home. The robot knocked on the door.

    "Sweetie, I'm so glad you come back. I really5you!" said Mum. Then she took the robot into the kitchen and gave him a snack before6.

    "I had lots of 7 at school today," said the robot. "I went to a space museum. I got to 8a real spacesuit. It was too big for me. "

    Jack was 9 outside the kitchen. He was10. He wanted to be an astronaut. He thought this wasn't a good idea. So the next day, Jack went to school himself.

Today, many students are always stressed out. They are often too busy to think{#blank#}1{#/blank#} their diets and exercise. Healthy eating, along with regular(定期的) exercise {#blank#}2{#/blank#} (keep) you healthy. Do you think it is the only way to keep us in {#blank#}3{#/blank#}(healthy)?

As we know, it is important to give your body the energy it needs. Teenage girls {#blank#}4{#/blank#} (need) about 2,200 calories(卡路里) a day and boys need a bit more. {#blank#}5{#/blank#} (fiftieth) percent of your calories should come from rice, bread, {#blank#}6{#/blank#}(vegetable) and fruit. You also need to d{#blank#}7{#/blank#} a lot of water, six to eight glasses a day. Enough water will improve your skin and give you healthy hair.

Exercise can help to make you look good, feel good {#blank#}8{#/blank#} be healthy. Scientists suggest that teenagers should spend at{#blank#}9{#/blank#}(little) 30 minutes exercising every day.

Exercise can make you feel {#blank#}10{#/blank#} (relax)and energetic. It can even help you sleep better at night.

Let's eat healthily and take more exercise.

Have you ever dreamed of traveling in space？To travel in space，we first have to work out where our food will come from. 

Today's space travellers don't go to the Moon or Mars. They go to the International Space Station （ISS）. There，the spacemen live for weeks to months. 

If you visited the ISS years ago，nearly every kind of food you ate would have come from the Earth. 

In 2014，scientists sent the ISS a space garden with some vegetable seeds（种子）. With water and some light, the vegetables in the gardern grew. Those were the first foods being grown on the Iss. But the spacemen couldn't eat them and had to send them back to the Earth. The next year，after scientists made sure they were safe，the spacemen grew a second crop. This time the vegetables were ready for the spacemen to eat. 

Gardening is different in space than it is on Earth. Without gravity，plants don't know which way is up. But they learn how to grow. They send their leaves in the direction of light and their roots into the soil. 

The spacemen also have grown vegetables as well as flowers. That's important to know a plant can flower in space，because flowering is part of how some plants make fruit. 

While the space garden is small for now，hopefully it could one day help provide people with food on long﹣time space trips. 

I'm Laura，a robot（机器人）. I can tidy rooms. Say"Clean！" to me and I can do it. 

Look! A computer and some books are on the desk. A blue schoolbag, a basketball and a box are under the desk. What can you see on the bed? A white phone. A notebook, two pencils and a pen are on it too. "Clean！"It's time to do my job（工作）. 

Now look! The books are in the bookcase, and the basketball is in the box. The phone is on the desk, but you can't see it. It is behind the schoolbag. In the schoolbag are the school things——the pen, the pencils and the notebook. 

Do you like the tidy room? I can help you. 

 Four students are in the classroom. They are Anna, Tom, Mike and Mary. Their jackets are on the teacher's desk. The jackets are brown, white, red, and blue. But we don't know whose they are. We know the boys' jackets aren't red and the girls' jackets aren't brown. What color is Mary's jacket? We don't know. But we know it's not blue. Tom says, "My jacket is white. " Do you know what color their jackets are?