How airplanes fly?

People {#blank#}1{#/blank#} (try) for a long time before they invented a {#blank#}2{#/blank#} (success) "flying machine". Now there {#blank#}3{#/blank#} (be) so many {#blank#}4{#/blank#} (plane) in the sky.

    An airplane {#blank#}5{#/blank#} (fly) because of the upward force(力量) of {#blank#}6{#/blank#} (move) air against its wings(翼). To get that moving air, it needs something {#blank#}7{#/blank#} (push) it forward—like a motor-driven propeller(螺旋桨) or a jet engine(喷气发动机). You can fly a kite if there  {#blank#}8{#/blank#} (be) enough wind to hold it up. An airplane is like a kite with such force!

    More and {#blank#}9{#/blank#} (many) young people are getting to like making model planes now. How about you? Are you interested in it after {#blank#}10{#/blank#} (read) this article?

    Do you go to school by bus? It is very important for you to know how to be safe when taking a bus, no matter whether you like it or not.

    First, don't run to the bus stop, but walk. While you are at the bus stop, you should wait in a safe place. Do not run or play while waiting. And never get into a car with a stranger.

    Second, don't talk in a loud voice when you are on the bus, so the driver will not be disturbed(打扰). If you need to talk with the bus driver, you'd better wait until the bus stop. Never throw things on the bus or out of the windows. Never play near the emergency exit(紧急出口). When there is a fire, the most important thing is to break the window with a hammer(锤子) or any sharp（锋利的） things and then jump out.

    Third, when you are getting off the bus, make sure you walk (not run) three more steps away from the door. This is the best place to be around a bus. Stay away from the bus wheels and watch out for moving cars!

    Last, if you leave something on the bus, never return to the bus to get it. The driver may not see you come back and he may begin moving the bus. Also, if you drop something near the bus, tell the driver before you try to pick it up, so he will know where you are.

    THE HISTORY OF LIVING IN SPACE

    Space travel is nothing new. The first spacecraft with a human on board blasted into space In 1961. since then, people have not only been travelling to space, but many of them have also lived there for extended periods.

Food

    All the meals on space stations are put together on Earth and sent to the space station, along with the astronauts, by space shuttle. Because the food has to last a long time (sometimes up to three months), a lot of it has to be preserved by dehydration or canning.

    The space station does not have a freezer to preserve food, but It does have a cool room to keep fruit and vegetables fresh.

Astronauts also eat many other foods such as cereals, cereal bars, nuts and dried fruit that do not need any special preparation.

    Eating

    Astronauts have a set timetable each day. This tells them when to do everything, including when to have their meals. At meal preparation time, they start getting their food ready, which often includes adding water to re-hydrate the dehydrated foods.

    Without the help of gravity, sitting down to eat can be tricky. Astronauts sometimes have to strap themselves and their food into place. Because of lack of gravity, astronauts cannot use ground salt and pepper, and all drinks must be taken from bottles. They also have to be careful that crumbs do not fly off and get stuck in vents and instrument panels.

    Last Friday, we had a school sports meet. The weather wash t fine in the morning but in the afternoon it was sunny. It was an exciting sports meet. We all had a good time.

    I'm Wang Ting. I'm from Class 1. Grade 7. Wang Lin is my classmate. He won the boys'400-meter race. Li Tang won the high jump. Liu Gang won the first in the long jump. Class 1, Grade 9 won the boys' relay race. Class 6. Grade 8 won the girls' relay race. I also took part in the sports meet. But I was only the last one to pass the finish line in the girls' 100-race. I will practice running every day. I'm sure I can do better next time.

Information Card

    When you're feeling low, helping yourself is the best thing to do. It may be the hardest, but no one can do that but you. Here is some advice for you.