Before the invention of hair dryer,vacuum cleaners were being used for the purpose of drying and styling hair. The early vacuum cleaners could draw in air as well as blowing air.So,towards the end of the 19^th century,women used to dry their hair by using a vacuum cleaner.

    In 1890,a French salon owner Alexander F.Godefroy invented the first hair dryer.It blew warm air.However,it was not widely used,mainly because of its large size.

    The first convenient hand-held hair dryer used at home came up in 1920.It weighed over 2 lbs.However,it only produced 100 watts of power,which was not enough to dry the hair.After almost ten years came the gas-heated dryers that were widely used in barber shops.However,these dryers produced heat that was harmful to hair and the air from them made people sick,so they were soon gone.

    Around the 1940s and 1950s,the helmet（头盔）style electric dryers came into being.Curly hairstyles were popular during that time.Therefore,women used curlers and sat under the dryers to set their curls.Later,the curly style began to drop,and so did the popularity of the helmet style electric dryer.

    In the late 1950s,the first workable hair dryer was made.It had a hand-held dryer.It used only 300-400 watts. Ever since the 1950s,hand-held dryers have experienced many changes,in order to become quieter,lighter and smaller.However,how it works largely remains the same.The modem technology has made improvements to the hair dryer,reducing the heat damage to a person's hair.For producing shinier,smoother and healthier hair,dryers have been included with negative ion（负离子）technology that dries hair faster and with less heat.

    As we all know, friendship is important in our daily life. A friend can give us help and share our difficulties and happiness. But how to make friends is still difficult to some of us. {#blank#}1{#/blank#}

Be friendly to others. {#blank#}2{#/blank#} You should try to make a stranger feel at home wherever he happens to be. Think more of others than of yourself and never judge a person by his look and clothes.

    Be reliable. If you and your friend agree to meet somewhere, don't be late. If you're not going to make it on time or make it at all, call them as soon as you realize it. {#blank#}3{#/blank#} Be someone that people know they can depend on.

    {#blank#}4{#/blank#} Listen carefully to what people say, remember important details about them （their names, their likes and dislikes）, ask questions about their interests, and just take the time to learn more about them.

    Encourage your friends. {#blank#}5{#/blank#} A friend to all is a friend to none. Never make fun of or laugh at your friends in front of others. You should come to support them.

A.  Be a good listener.

B.  When you say you'll do something, do it.

C.  A true friend always gives courage to his friends.

D.  Never leave your friend when he is in trouble.

E.  The following information can give you some tips.

F.  Smile at others and you are sure to get a smile in return.

G.  He will remain with them in both good as well as bad times.

    Here is some general information about Edison Elementary School. For more information, you can visit our website which is printed on the cover.

    Attendance：

    Please contact the office at 480－472－5282 if your child is going to be absent.

    Renaissance Reading：

    The Accelerated Reader (AR) Program is a computerized reading enrichment program that combines great children's literature with computer skills. As an individualized reading program, it is designed to motivate students to read more and to read good literature. Students of different abilities can use this program. It is not a competitive program but one that improves any student's reading ability.

    Here is how it works. Students select books in their reading range from our Accelerated Reader Selection and read it at their own pace. Once the student has completed the book, he/she is ready to take an AR quiz. Each quiz consists of 5, 10, or 20 multiple choice comprehensive questions about the book.

    After taking the quiz, the computer shows the student how many questions he/she answered correctly, shows the correct answers for missed questions, and praises the students' efforts with an on­screen personalized message. Passing the quiz assures the teacher and the parent that the child actually read and understood the book. Each student tests independently—reading the quiz questions himself/herself.

    The computer keeps track of reading points, books, and average test scores, as well as other data. A student may test on a book only once and should, therefore, have thoroughly read and understood the contents before taking the quiz. Each student is responsible for reading the screen to be sure the quiz, by title and author, is the correct one he/she wishes to take.

    Students are recognized for their accomplishments with praise from the teachers and special recognition at the classroom level when individual and/or classroom goals are met.

    PTO：We have an active Parent Teacher Organization. They have monthly meetings, check the calendar for the meeting times and places.

    Every animal sleeps, but the reason for this has remained foggy. When lab rats are not allowed to sleep, they die within a month.{#blank#}1{#/blank#}

    One idea is that sleep helps us strengthen new memories. {#blank#}2{#/blank#} We know that, while awake, fresh memories are recorded by reinforcing (加强) connections between brain cells, but the memory processes that take place while we sleep have been unclear.

    Support is growing for a theory that sleep evolved so that connections between neurons (神经元) in the brain can be weakened overnight, making room for fresh memories to form the next day.{#blank#}3{#/blank#}

    Now we have the most direct evidence yet that he is right.{#blank#}4{#/blank#} The synapses in the mice taken at the end of a period of sleep were 18 per cent smaller than those taken before sleep, showing that the connections between neurons weaken while sleeping.

    If Tononi's theory is right, it would explain why, when we miss a night's, we find it harder the next day to concentrate and learn new information — our brains may have smaller room for new experiences.

    Their research also suggests how we may build lasting memories over time even though the synapses become thinner. The team discovered that some synapses seem to be protected and stayed the same size. {#blank#}5{#/blank#} "You keep what matters," Tononi says.

A. We should also try to sleep well the night before.

B. It's as if the brain is preserving its most important memories.

C. That's why students do better in tests if they get a chance to sleep after learning.

D. Similarly, when people go for a few days without sleeping, they get sick.

E. The processes take place to stop our brains becoming loaded with memories.

F. Tononi's team measured the size of these connections, or synapses, in the brains of 12 mice.

G. "Sleep is the price we pay for learning," says Giulio Tononi, who developed the idea.

    There's a word of wellness I've loved for years. It's HALT: the idea that if you want to be calm and content, never let yourself get too hungry, angry, lonely or tired. Researchers are increasingly looking more closely at the "L" in "HALT", with one report presented to the American Psychological Association finding that long-term loneliness might be a greater public health risk than obesity.

    Loneliness is a problem with many faces. Some people are alone most of the time—data collected by the United Kingdom found that 200, 000 people over the age of 75 had not had a conversation with a friend or a relative in more than a month. But some people feel lonely even in a crowded room, disconnected from meaningful relationships even though their days are filled with people.

    To me, walking a positive path means walking alongside others—people who lift our spirits, share our values, challenge us to grow and learn and bring us joy. But social satisfaction doesn't come automatically or even easily to too many people. And in our age of individualized electronic devices, social media and text-based communication, it can be harder than ever to feel truly connected to others.

    I was so heartened to read that recently the British Parliament (议会) has created a "Minister for Loneliness" position to promote research, education and principles so as to cure what some researchers call "the loneliness disease". More and more doctors in America are also screening adult patients for loneliness at annual physical examinations, which is another promising sign.

    With proper social support and community participation, loneliness can be prevented from happening. If you are feeling lonely, make a list of your daily routines and ask yourself how you could add more social interactions to each day. Try reaching out for volunteer opportunities, clubs and organizations to join and old friendships to renew. If you are struggling, ask a consultant to help you identify your social obstacles and overcome them.

    Earthquakes strike suddenly at any time of the day or night, but there's no way to tell when. If an earthquake happens, it may cause many deaths, injuries and damage. So you need a good preparation ahead of time. Decide how and where your family will get together if separated. Choose an out­of­state friend or relative that the family members can call after the quake to report where they are and how they are. Know the safe places in each room: under the strong tables, desks, or against inside walls. Keep enough food, water and other things, including a flashlight, a radio, medicines and clothing.

    During the earthquake, you should keep a clear head and never be too nervous to know what to do. Protect your head and neck with your arms. If possible, take a book, a pillow or any other things to protect yourself from falling glass and ruins. If you are indoors, you must immediately lie under any strong furniture. If outdoors, move to an open area away from trees, buildings, walls or powerpoles. If you are in a narrow valley, move to the centre of it and look up for falling stones. If you are in a car, move to the side of the road and stop the car. Do not stop near buildings, power lines or on or under bridges. Stay in your car until the shaking stops.

    Do not move a badly injured person unless he is in great danger after the earthquake. Do not use the telephone immediately unless there is a serious injury or fire. Turn on your radio for instructions and news reports. Be prepared for aftershocks. If you want to leave your home, post a message inside your home telling your family members where you can be found.