Notice
November 22
The students of Class 3, Grade 3 will go to the Red Star Village and help the farmers to get in rice. We will meet on the school playground at 7 o’clock on the morning of Saturday. Please get everything ready and take lunch with you. Be sure to put on the old clothes. And we will be back to school at half past five in the afternoon. Everyone should get there on time.
Miss Liu
Information Card
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In modern times.our clothes seem good enough to meet our needs both in color and style.However，are you impatient with washing your clothes so often？Are you tired of the same color？If your answer is "Yes".Let's meet the fashion in the future.
Sun﹣No﹣Spot
To clean this shirt，just stand in the sun!A special material on the surface receives UV light from the sun.This heats it up enough to make stains（污渍） missing.You stay cool but stains disappear!Some stains disappear in minutes—others might take a day.
New Fabric Suit
Are you sick of holes in your clothes？This new material repairs itself!If this cloth gets a hole.just rub （搓揉） the broken place quickly.Heat from the rubbing will cause the materials to connect with each other again，repairing the hole.Hole？What hole？
New Wiggle Vigor
This cloth gets a charge（充电） from running around.As you move，the thin wires in the material turn your movement into power.This can charge a computer，an ipad，a hair﹣dryer，and many other small things that need power.
Chameleon Cloth
Tired of the same old look？How about clothes that change colors？This material is made with dyes（染料） that change colors when they get warm.A small battery heats up thin metal threads（金属线） in the cloth.to change colors or forms.
（1）If your Sun﹣No﹣Spot shirt is dirty with stains，what can you do to clean it？
A.Warm it in the sun.
B.Rub it quickly.
C.Connect it to a computer.
D.Change its color.
（2）If your mobile phone has no power.which one can help you？
A.Sun﹣No﹣Spot.
B.New Fabric Suit.
C.New Wiggle Vigor.
D.Chameleon Cloth.
（3）Which of the next pictures goes well with Chameleon Cloth？
A. 
B.
C.
D. 
Rice is one of the most commonly eaten basic foods around the world.Buying it and cooking it is a daily matter.Yet for many，its presence has been a matter of life and death.It is a main food because it is easy to grow，besides low cost and convenience.A poor community in the developing world may find it difficult to bring in foreign fruits or raise cattle for meat，but it can almost certainly use the land it has in order to grow plenty of rice.
This was the great achievement of Yuan Longping，who passed away on May 22 this year.A great Chinese scientist，Yuan successfully developed what is known as "hybrid rice" which can produce up a 30% higher output.Yuan Longping was born in the year 1930，a time when China was very different.It was a nation，without modern industry，depending on the rice which they grew.The first few decades （十年） of his life were met with major social events，and a rapidly growing population that made food supply not last all the time.This experience left its mark on Yuan Longping，which made him focus on （关注） farming science and work on his research of hybrid rice.
His achievement would see the rice supply in China increasing from 56.9 million tons in 1950 to 194.7 million tons by 2017.By 1991，20% of the world's rice output came from hybrid rice，even if only being planted in 10% of fields.
Always remember，human development begins first with the most basic and sample things，such as developing rice.We should be thankful for scientific thinkers like Yuan.
（1）Why is rice a main food around the world？
（2）What did Yuan develop successfully？
（3）When was Yuan Longping born？
（4）What made Yuan focus on farming science？
（5）How many tons was the rice supply in China by 2017？
5 ways to train your brain for better sleep
The days are longer，full of sunshine and bright with the promise of enjoying a more relaxing spring and summer with your loved ones.But if you want to enjoy your daytime，it's time to improve your sleep during the night﹣time. "Sleep problems endanger health and quality （质量） of life for up to 45% of the world's population，" according to the World Sleep Society.
Sleep is one of the three keys to a healthier，longer life （the others are diet and exercise）. （1） .Here are the top five ways to improve your sleep and get some zz's：
Create a sleep nest
（2） .Science tells us that we sleep better in cooler temperatures of about 60 to 67 degrees Fahrenheit（15℃to 20℃）.
Develop a routine
Set up a bedtime ritual by taking a warm bath or shower，reading a book or listening to soft music.You're teaching your mind to relax.And stick to it.Go to bed and get up at the same time each day，even on weekends or your days off. （3） .
Cut the lights
Production of the sleep hormone melatonin （荷尔蒙褪黑激素） begins at dark.Research has found that the body will slow or stop it with light on，to get away from any light，even the blue light from your charging smart phone.
Refuse the wine
Don't turn to wine to make you calm or help you sleep.（4） .Your body needs to experience all three steps of sleep—light sleep，dream，and deep sleep—to fully repair itself.
（5） .
Heavy and spicy foods may give you heartburn or other digestive problems，thus influencing your ability to get and stay asleep.
If you try these tips and can't seem to relax，or your sleep continues to worsen，be sure to reach out to your doctor or a mental health professional.
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A.The body like routine B.Avoid heavy or hot foods C.Refuse coffee later in the day D.One of the first tasks is to set up your sleep environment E.Wine may help you fall asleep，but it holds you in the lighter sleep F.Many of the ways to increase the quality of your sleep are easy to follow |
What do you do with your rubbish？Throw it out？You don't know what you're missing!Look closely at the two figures on your left.They were made from things most people throw away.The figures were made from used bottle caps.Those two bottle﹣cap figures were exhibited （展示） in a museum.
Folk art is art made by common people who have not been trained as artists.Their work is often based on traditions in their culture.Fine art，on the other hand，is usually made by people who have had training in art.Works of fine art are valued for their artistic beauty.They are supposed to be looked at but not used.Works of folk art，however，are often made for everyday use.
There were more than 800 pieces of folk art from nearly 50 countries in the exhibition.All of the pieces were made from used metal，wood，cloth，and plastic.The artists come from many different cultures.Still，they all share one thing.They take objects that are normally thrown away and change them into objects that are beautiful，useful，and fun.The artists may not think of what they do as recycling，but that's exactly what it is.Fine artists might work with expensive materials.They might use expensive tools to shape these materials into works of art.On the other hand，in poor countries rubbish might be the only material folk artists and toy makers can afford.The exhibition shows that a rich imagination is very important when there are only poor materials.Recycled art began long before people began to think about recycling.Some of the objects in the exhibition date from the 1930s.
Even if you don't create art out of rubbish，it's good to save our natural resources.Remember the three rules：reduce，reuse，recycle.If you reduce waste，true things instead of throwing them out，and recycle materials such as paper，plastic，and glass，you will protect the environment.
（1）Which idea belongs in the empty box？
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Conclusion （结论） |
Details |
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Art based on cultural traditions |
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Art made for everyday use |
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Art made with used materials |
A.Folk art is made by people who are not trained artists.
B.The artists come from many different cultures.
C.Recycled art began long before people started recycling.
（2）What can we learn from Paragraph 3？
A.There was more than 800 pieces of fine art.
B.Folk artists can't shape expensive materials into works of art.
C.Poor materials also can be made into works of art.
（3）What is the same thing of the pieces in the exhibition share？
A.They are all woks of fine art.
B.They are all made from used materials.
C.They are all made by the trained artists.
（4）What can we do to protect our environment？
A.Throw away used materials.
B.Only use expensive materials.
C.Recycle materials.
（5）Which of the following would be the best title for the passage？
A.Used Bottle Caps
B.The Art of Recycling
C.A Museum Exhibition
Dogs might have the latest tools in the fight against cancer （癌症）：their noses!Researchers at California's Pine Street Foundation （PSF） say they have trained five dogs to smell cancer on a prison's breath.This could be exciting news.
A dog's sense of smell may be 10，000 to 100，000 times stronger than ours.But can dogs really smell illness？PSF researcher Michael McCulloch says yes. "We were very surprised by how exact they were，" he said. "They were telling who had cancer，and they were also saying who didn't."
McCulloch and his team asked four healthy people and one with cancer to blow into plastic tubes （塑料管）.Special materials in the tubes kept the things of each breath.The tubes were then placed one yard apart.Finally the dogs were allowed to smell the tubes.Each dog had been trained for three weeks to sit when it smelled cancer.Ninety﹣nine percent of the time，the dog sat next to the tubes blown into by patients with lung cancer.The dogs were right 88 percent of the time about breast cancer.
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Dogs in the Pine Street Foundation test were trained to sit when they smelled cancer.How well did they perform？Take a look at this chart to find out. |
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Breath Sample |
Number of Times the Dogs Sat Down |
Number of Times the Dogs Kept Standing |
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Breath from lung cancer patients |
564 |
10 |
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Breath from healthy persons |
4 |
720 |
No lab test for cancer has given more correct results than this test.The results are so amazing that many experts question the dogs' smelling power.They wonder if there were other reasons why the dogs did so well.For example，they thought the way the dog trainers behaved could have influenced how the dogs acted.However，most experts agree that this study is important.The information could help scientists create a simple breath test for cancer in the future.Once again humans may be getting a helping paw or nose﹣from their best animal friends.
（1）What's the latest tool a dog might have in the fight against cancer？
A.Tooth.
B.Nose.
C.Ear.
（2）What happened first in the Pine Street Foundation test？
A.The dogs were trained.
B.The tubes were placed one yard apart.
C.The dogs smelled the tubes.
（3）What was a dog supposed to do when it smelled cancer？
A.Smell again.
B.Turn around.
C.Sit down.
（4）Look at the chart.How many times did the dogs keep standing when they smelled the breath from healthy persons？
A.Less than 10 times.
B.Almost 600 times.
C.About 700 times.
（5）Why do many experts question the dog's smelling power？
A.Because no lab test for cancer has given more correct results.
B.Because the dog trainers influenced how the dogs acted.
C.Because they don't think this study is important.
