Recently some American scientists have given a useful piece of advice to people in industrialized nations．They say people should eat more of the same kind of food eaten by humans living more than 10,000 years ago． {#blank#}1{#/blank#}

     The scientists say that the human life has changed greatly．Our bodies have not been able to deal with these changes in life style and this had led to new kinds of sicknesses． {#blank#}2{#/blank#} So they are called "diseases of civilization"．Many cancersand diseases of the blood system are examples of such diseases.

      Scientists noted that people in both the Old Stone Age and the New Stone Age enjoyed very little alcohol or tobacco, probably none． {#blank#}3{#/blank#}  However, a change in food is one of the maindifferences between life in ancient times and that of today.

      Stone Age people hunted wild animals for their meat, which hadmuch less fat than domestic ones．They ate a lotof fresh wild vegetables and fruits．They did nothave milk or any other dairy products, and they made very little use of grains． {#blank#}4{#/blank#}  We eat six times more salt than our ancestors．We eat moresugar．We eat twice as much fat but only one third as much protein andmuch less vitamin C.

{#blank#}5{#/blank#} But scientists say that we would be much healthier if weeat much the same way the ancient people did, cutting the amount of fatty,salty and sweet food.

A．Stone Agepeople lived a simple life.

B．But today, weenjoy eating a lot of these.

C．In that case,they would live much healthier.

D．Ancient people also got lots of physical exercise.

E．These new sicknesses were not known in ancient times.

F．People today probably don't want to live like our ancestors.

G．Modern people used to suffer from "diseases of civilization".

    It's not easy being a teenager（13 years old ~19 years old）—nor is it easy being the parent of a teenager. You can make your child feel angry, hurt, or misunderstood by what you say without realizing it yourself. It is important to give your child the space he needs to grow while gently letting him know that you you'll still be there for him when he needs you.

    Expect a lot from your child, just not everything. Except for health and safety problems, such as drug use or careless driving; consider everything else open to discussion. If your child is unwilling to discuss something, don't insist he tell you what's on his mind. The more you insist, the more likely that he'll clam up. Instead, let him attempt to solve things by himself. At the same time, remind him that you're always there for him should he seek advice or help. Show respect for your teenager's privacy. Never read him his mail or listen in on personal conversions.

    Teach your teenager that the family phone is for the whole family. If your child talks on the family's telephone for too long, tell him he can talk for15 minutes, but then he must stay off the phone for at least an equal period of time. This not only frees up the line so that other family members can make and receive calls, but teaches your teenager moderation（节制）. Or if you are open to the idea, allow your teenager his own phone that he pays for with his own pocket money or a part –time job.

The Scar of Love

    Some years ago on a hot summer day in south Florida a little boy decided to go for a swim in the old swimming hole behind his house.In a hurry to dive into the cool water,he ran out of the back door,leaving behind shoes,socks and shirt as he went.He flew into the water,not realizing that as he swam toward the middle or the lake,an alligator（短嘴鳄）was getting close.The mother in the house was looking out of the window and saw the two as they got closer and closer together.In great fear,she ran toward the water,yelling to her son as loudly as she could.Hearing her voice,the little boy became alarmed and made a U—turn to swim to his mother.It was too late.Just as he reached her, the alligator reached him.From the dock,the mother grabbed her little boy by the arms just as the alligator snatched（抓住）his legs.That began an unbelievable tug-of-war（拔河比赛）between the two.The alligator was much stronger than the mother,but the mother was much too passionate to let go.A farmer happened to drive by,heard their screams;rushed from his truck,took aim and shot the alligator.

    Remarkably,after weeks and weeks in the hospital,the little boy survived.His legs were extremely scarred by the terrible attack of the animal.And on his arms,were deep scratches where his mother's fingernails dug into his flesh in her effort to hang on to the son she loved.

    The newspaper reporter,who interviewed the boy after the trauma（外伤）,asked if he would show him his scars. The boy lifted the pant legs.And then,with obvious pride,he said to the reporter,"Look at my arms.I have great scars on my arms,too.I have them because my mum wouldn't let go."

    You and I can identify with（认同）that little boy.We have scars,too.Not from an alligator,but the scars of a painful past.Some of those scars are unsightly and have caused us deep regret.But,some wounds,my friends,are because we have refused to let go.

    Ten minutes of gentle exercise can immediately change how certain parts of the brain communicate and coordinate (协调) with one another and improve memory function, according to an encouraging new study.

    The scientists invited 36 people of different ages to the lab and had them sit quietly on a fixed bicycle for 10 minutes or, on a separate visit, pedal the bicycle at a pace so gentle that it barely raised their heart rates. It also was short, lasting for only 10 minutes. Immediately after each session of the sitting or slow pedaling, the people completed a computerized memory test during which they would see a brief picture of, for instance, a tree, followed by a variety of other images and then a new image of either the same tree or a similar one. The people would press buttons to show whether they thought each image was new or the same as an earlier shot. The test is difficult, since many of the images closely resemble one another. It requires rapid, skillful scanning recent memories to decide whether a picture is new or known. Next, the scientists had each people repeat this process--riding or sitting on the bike for 10 minutes and then completing memory testing--but the testing now took place inside an M. R. I. machine(磁共振成像仪)that scanned the people's brains while they responded to the images.

    Then the researchers compared results. The effects of the exercise were clear. The people were better at remembering images after they had ridden the bike, especially when the images most closely resembled one another. In other words, the harder their memories had to do their best, the better they performed after the exercise. The M. R. I. scans showed that memory parts of each people's brain lit up at the same time with parts of the brain associated with learning, indicating that these physically separate parts of the brain were better connected now than when the people had not first exercised.

    The flowers are blooming and the birds are singing as Melinda sits in the rose garden of the nursing home. She is recalling old times as she waits for her family's arrival. The nursing home has been Melinda's new settlement ever since Thomas passed away a week ago. Thomas had fought a long and hard battle against lung cancer for three years. Unfortunately, he has broken the promise that he and Melinda had made: to be with each other for every birthday. Melinda knew this was unrealistic (不现实的) but agreed to the promise for Thomas's sake.

    "Thomas, you are completely a dreamer." Melinda shouted to Thomas as he dragged on about living on an island with his beautiful wife. That's what she loved about him most—he had a vivid imagination. They got married at age eighteen and began having children right away. Mary came within the year, followed by Thomas Benjamin II, Lilly-Ann, and Joseph “Little Joey” George. The family lived an exultant life filled with laughter and love.

    "Mom!" Lilly shouted, but it really sounded like a howl. Melinda had lost herself in thinking about the life she had shared with her late husband. Lilly pushed her down the long dark halls of the nursing home until they arrived at the recreational room.

When the doors opened, Melinda put her hand over her mouth and was completely speechless. The room was crowded with the people nearest and dearest to her and the warmth and love was felt instantly. The night went on; stories and cocktails were shared and everything was perfect.

    However, when Melinda caught a moment to herself she looked around at her family. With a smile on her face, she raised her Manhattan and called out for a toast. “This one is for you, Thomas, though you are not here.”

Discovering the beauty of the science and maths that shape our everyday lives, an experience in Wonderlab will fuel your imagination and inspire you to see the world around you in new and exciting ways. Come and enjoy yourself!

What to see

Spread across seven different zones, there're loads of opportunities to get hands on with real scientific phenomena. Observe live experiments at our Chemistry Bar, see lightning strike before your eyes, play with forces on giant slides or travel through space under a canopy (苍穹)of stars. You can also take part in explosive science demonstrations led by our talented team of explainers. With 50 mind-blowing wonders of science to enjoy, Wonderlab is an experience unlike any other. Besides, a selection of shows will be performed daily in Wonderlab's beautiful new show space. They are free of charge and last 20 minutes.

Tickets

♦ Day pass:  £ 6 per person.

This ticket gives you day-long access to Wonderlab, perfect whether you're planning a special trip to the Museum or simply passing through London and want to feed your curiosity.

♦ Annual pass:  £ 10 per person.

For less than the price of two visits, give yourself a year packed full of wonder, curiosity and breathtaking experiences.

Opening times

Open seven days a week, 10:00 — 18:00 (last entry 17:15). Wonderlab will be closed on December 24，25 and 26 and will be open as usual from December 27.

During school holidays our opening hours are 10:00 — 19:00 (last entry 18:15). Please note that in peak periods (from midday onwards) we are experiencing long queues due to the gallery's popularity.