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A good night’s sleep can improve your mood and your memory. New data shows that getting enough sleep might also get your cuts to grow back together faster. In fact, sleep was more important than good healthy food in speeding wound growing back together.

This wasn’t what scientists had expected to see.

They had hoped to show that giving people the right type of food for good health and growth would make their skin wounds grow back together faster --- even in people who were prevented from having enough sleep. The scientists thought it should work because good healthy food keeps the body strong, helps repair injuries and guards against infection (感染).

Tracey Smith is a scientist at the U.S. Army Research Institute. She and her team studied three groups of healthy people who came to their lab to take part in tests. They gave each group small skin wounds.

* One group of 16 volunteers got a normal amount of sleep --- seven to nine hours a night. The other two groups of 20 people each got only two hours of sleep a night, for three nights in a row. To stay awake, the volunteers were asked to do things such as walking, playing video games, watching TV, sitting on an exercise ball or playing table tennis. Throughout the experiment, one of the sleep-losing groups got a healthy drink with protein and vitamins. The other group also got a drink: It looked and tasted the same but had no healthy chemicals in it.

Sleep clearly helped. People who slept normally got well in about 4.2 days. The volunteers without enough sleep took about 5 days. And getting better healthy food offered no clear benefit. What to make of the data

Sleep expert Clete Kushida didn’t find the results all that surprising. He is a doctor at Stanford University Medical Center in California. The idea that lost sleep harms the body is true.

Why didn’t healthy food help healing time? Smith can think of a few possibilities. The healthy drinks may have helped a little --- just not enough to show up clearly in the small numbers of men and women tested here. Different people need different amount of time to become better.

For people who can’t avoid losing sleep, scientists still don’t have a good way to help them. Smith says, “If you want to become better faster, your best bet for now is to get more ‘vitamin Z’.

【小题1】What did the scientists think of this experiment at first?
A.They expected that good healthy food could help people’s skin wounds grow back together faster even without enough sleep.
B.They believe that enough sleep was more important than healthy food because it kept the body strong and helped repair injuries.
C.They thought that without enough sleep it was hard for the skin cuts to become better because the right type of food didn’t work.
D.They wondered which type of way was more helpful and useful to skin injuries, enough sleep or the right type of healthy food.
【小题2】Why did the writer write the paragraph with a “*”?
A.To show how right the scientists’ prediction was.B.To introduce which group worked better.
C.To tell readers how the experiment was.D.To show what volunteers took part in it.
【小题3】Sleep expert Clete Kushida didn’t find the result all that surprising because         .
A.he thinks healthy drinks just helped a little because not everyone needs them
B.he believes different people need spend different time in becoming better
C.he guesses the drinks may be not healthy enough to work properly
D.he thinks not having enough sleep is bad for people’s body and health
【小题4】What does Smith refer ‘vitamin Z’ to in the sentence “If you want to become better faster, your best bet for now is to get more ‘vitamin Z’?
A.A vitamin called Z.B.A helpful healthy chemical.
C.A vitamin which is helpful to wound.D.sleep.
【小题5】What’s the best title for this article?
A.A useful and helpful report on sleepB.Sleep makes wounds better faster
C.Healthy food helps repair injuriesD.A useful and important experiment
18-19九年级上·上海黄浦·期中
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Among all the pen productions, writing brush (máo bǐ) is a kind of special writing tool made in China mainly. Archaeologists(考古学家) said that writing brush or some pens like brush first appeared more than 5000 years ago. It wasn’t widely used until the Warring States Period (476BC—221BC). Hengshui, Xuancheng and Huzhou were three centers for making writing brushes in Chinese history. People in the hometown of writing brush—Hengshui—still celebrate the invention of brush every year.

A writing brush includes two important parts and materials used to make each part are quite different. Materials for the head part includes rabbit hair, horsehair, pig hair and soon. If you want to buy a Chinese brush as a gift for your friends, you can choose the one with soft hairs, mixed hairs or hard hairs according to their writing styles. There’s also a tradition that Chinese people like to make a writing brush from the first haircut a baby gets. It’s believed that a writing brush made from the hair of newborn babies will bring good luck while taking exams. As for stalks(笔杆), normal materials are usually wood, but we can also see some special ones made from ivory, gold and some other valuable materials.

It is considered that writing brush is the most important one among Four Treasures of Chinese Study. The other three are ink stick, paper, and ink stone. In Chinese calligraphy(书法) and Chinese painting, writing brush is widely used. In old China, children had to learn calligraphy and try to write a good handwriting. Even the emperors(皇帝) themselves were good at calligraphy. Nowadays, Chinese people still practice calligraphy with writing brush from a very young age. When writing, many people will forget all worries and even themselves, turning all thoughts into the beauty of art. People think it helps improve a person’s temper(脾气). It is not only a means of communication, but also a means of expressing a person’s inner world.

【小题1】According to the article, the hometown of writing brush is          .
A.HengshuiB.XuanchengC.HuzhouD.Changzhou
【小题2】What does Paragraph 2 mainly talk about?
A.There are both soft and hard brushes.
B.Hair of newborn babies is the best to make the head of a writing brush.
C.Different materials can be used to make the head of writing brush.
D.There are two parts of the writing brush-head and stalk.
【小题3】In the underlined sentence in Paragraph 3, the writer mentions “the emperors” to show         .
A.writing brush is difficult to learn
B.people paid great attention to calligraphy in ancient China
C.the Chinese emperors were all good at calligraphy
D.the emperors improved their temper with calligraphy
【小题4】What are the advantages of practicing calligraphy?
①Help people forget worries.               ②Help people do things more quickly.
③Help students get high marks.             ④Help people to improve their temper.
⑤Help people express themselves through calligraphy.
A.①②③B.①④⑤C.②③⑤D.②④⑤

Play is the basic business of childhood, and in recent years research has shown the great importance of play in the development of a human being. From earliest infancy(婴儿), every child needs opportunity and right materials for play, and the main tools of play are toys. The main function of toys is to suggest, encourage and play. To succeed in this, they must be good toys, which children will play with often, and will come back again and again. Therefore, it is important to choose suitable toys for different stages of a child’s development.

In recent years, research on baby development has shown that the standard a child is likely to reach, within the range of his inherited(遗传的) abilities, is largely determined in the first three years of his life. So a baby’s ability to benefit from the right play materials should not be underestimated. A baby who is encouraged, talked to and shown things and played with, has the best chance of growing up successfully.

In the next stage, from three to five years old, curiosity knows no bounds. Every type of suitable toys should be made available to the child, for trying out, experimenting and learning, for discovering his own particular ability: Bricks and jigsaws(七巧板) and construction toys; painting, scribbling(涂鸦) and making things; sand and water play; toys for imaginative and pretending play—the first social games for learning to play and get on with others.

But at the third stage of play development—from five to seven or eight years old—the child is at school. But for a few more years play is still the best way of learning, at home or at school. It is easier to see which type of toys the child most enjoys.

Until the age of seven or eight, play and work mean much the same to a child. But once reading has been mastered, then books become the main source of learning. Toys are still interesting and valuable, which lead up to new hobbies, but their significance has changed to a child of nine or ten years old, toys and games mean, as to adults, relaxation and fun.

【小题1】What does the writer want to tell us in the first paragraph?
A.Children should choose toys by themselves.
B.Children like playing, but they don’t need any toys.
C.Children should be given different toys as they grow up.
D.Children should be given the same toys as they grow up.
【小题2】According to the passage, we can give the child every kind of toys ________.
A.when he is twoB.when he is around four
C.when he is sixD.when he is eight
【小题3】When a child is seven years old, what is the main source of learning?
A.Toys.B.Books.C.Jigsaws.D.Paintings.
【小题4】What is the article mainly about?
A.The importance of schooling.
B.The choice of toys for children.
C.The importance of pre-school education.
D.The role of play in a child’s development.

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