Since the first person walked on the moon in 1969, technology has greatly helped space exploration. In recent years scientists have built a special robot to accompany astronauts on space missions (任务). Because this robot looks and moves like a person, scientists call it a humanoid robot. The latest model of the humanoid robot is known as R2, short for Robonaut 2.

    R2 was first launched into space on February 24, 2011. It was built by the National Aeronautics and Space Administration (NASA) and the car producer General Motors (GM).

    R2 weighs 330 pounds and costs $2.5 million to build. It has arms and a head- filled with vision equipment—but no legs. Its "brain", or computer, is in its stomach. R2's arms can hold 20 pounds. Each bendable finger has 5 pounds of grasping force. R2's hands are also skillful. Since its hands are shaped like human hands, R2 can use human tools to complete tasks traditionally performed by astronauts." Astronauts absolutely have their day packed from the minute they wake up until they go to bed. If Robonaut can provide just an hour's worth of relief to the astronauts doing something they don't want to do, that would make it worth it right there," says Nic Radford, the deputy project manager of R2.

    One advantage of working with R2 will be that ii can't complain about its work! Astronauts will also appreciate the fact that the robot can perform its duties without constant supervision (监管). R2 can be assigned a task and then checked on periodically. If R2 does not complete a task correctly, astronauts will be able to make minor adjustments to adapt (适应) the robot's behavior so that the task gets done right.

    R2 is still in the design stage of development, which means that scientists are frequently testing it and looking for ways to improve it. Right now, humanoid robots do not have the protective equipment needed to work outside the space station. As technology advances, humanoid robots will be able to help astronauts with dangerous tasks as well as routine ones.

    In the future, humanoid robots will be astronauts' eyes in space, going to places considered too difficult or unsafe for astronauts to explore. Some of them will be mounted on wheels to explore the surface of planets or asteroids (小行星). The robots will be able to send back videos and help astronauts gather information about the atmospheres of these places.

    One outcome of using these humanoid robots will be a greater understanding of the interaction between humans and robots. NASA engineers believe that when humans and robots combine forces and work together, the results will be better than what either could achieve alone. John Olson, a director at NASA headquarters in Washington, D.C, says that the project will allow us to go farther and achieve more than we can probably even imagine today.

Your home is a place of family, friends and warmth. Even though home is a safe place, it is important to understand that there are some things in your home that can sometimes hurt you if you aren't careful. {#blank#}1{#/blank#}Take a moment to learn some very simple things to make your home safer. 

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Reach up for a handle(手柄)on a stove or table carefully. The pot may be filled with boiling water or very hot food. If it falls on your skin or face, you can be very badly burnt. 

Be electricity wise.

Never stick your fingers, sticks or any other objects into an electrical socket (插 座). This can burn you very badly if the electricity carries out to your body. Leave electrical lines alone. {#blank#}3{#/blank#}

Know what to do if you are caught in a fire.

If you are asleep or inside your house when a fire starts, there may already be thick, dark smoke when you try to get out. {#blank#}4{#/blank#} There is usually less smoke at the floor level. 

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If it ever happened that your clothes caught on fire, it is important to practice this so that you will do it just in case something happens. Stop screaming and crying. Drop to the floor straight away. Roll over and over to try to put out the fire. 

Someone says learning new words is the most difficult part in language learning. Maybe everyone has trouble in 1 new words. It is not easy to remember and use them correctly. The following 2 will help you a lot.

It can be a good idea to divide the new words 3 groups according to the meanings. Thinking about the connections between words may help you to remember them. The more you practice, the 4 you will use them. You can also write a list of some new words. Express your ideas with them and discuss the uses of these words as 5 as possible. However, there is one more thing you should 6 attention to. Don't try to learn too many words at one time. Choose several important 7 to you. Repeat their pronunciations, spellings as well as their meanings in your mind. Learn a little every day and you will learn a lot 8 a few months. What's more, be confident. You'll surely meet many difficulties while learning new words. Face them bravely and be9 with yourself. The secret to success is sticking to learning. 

It is the skills that can help you know more words quickly. The skills 10 can make you learn new words easily are helpful.

Dear Peter,

Hi! My name is Hunt. Here is a picture of my class. Joan is short and is in a yellow dress. She has long hair and big eyes. He always smiles and is 1 to others. She is good 2 maths. David is tall and has black hair. He likes to play 3 chess. Mike is big. He has small eyes. He is funny. He 4 maths. He enjoys 5 stamps. Helen is a black girl. She has short hair. She can speak French 6 she can't speak Chinese well. She likes badminton 7 tennis. She is on the school team.

I'm the boy with glasses. I am 8 student in my class. Can you find me? I wish to travel around the world. Last winter holiday I went to Korea with my parents. It was wonderful!

 9 you send 10 a picture of your class?

Best wishes,

Hunt

Do you want a friend? Who can be your friend?