Gaynor Norgan's three﹣year﹣old daughter Eve began to choke（噎住）on a bag of Maltesers as they drove in the car．Gaynor, who is a___________first aider desperately tried to force the chocolate out___________the heimlich manoeuvre（海姆立克急救法）． When it___________she started to fear the worst．Then a passing stranger 39 to her aid．

Gaynor，___________， told the Manchester Evening News："We were___________out of the car park and I heard Eve gurgling.She was___________in the back with my mum． I___________and could see the Malteser___________in her windpipe．I stopped the car，___________her out of the car seat and started to administer the Heimlich manoeuvre．I___________it twice but I couldnt get it out．Then___________came over and she couldn' t do it either．"

"I was___________at that point．I just fell___________．Then this man came and___________her from both of us and put her over his___________．He hit her hard on the back and it___________straight away． Then he just___________her back to me．Then he disappeared．"

"Eve is all right now but if he hadnt been there I strongly___________She would have choked to death． I just want to say thank you."

The man who___________wore a brown leather jacket and carried a walking stick.He had slightly graying hair and is thought to have been in his 40s．The___________parents wish he would come forward．

   Julie boergers, Ph．D a sleep expert from the Bradley Hasbro Children's Research Center, recently led a study connecting later school start times to improved sleep and mood in teens．

"Sleep deprivation is common among teenagers, with potentially serious impacts on mental and physical health, safety and learning.Early high school start times contribute to this problem，"said Boergers."In this study, we looked at whether a delay in school start time would change students' sleep patterns, sleepiness, mood and caffeine(咖啡因)use."

Beorgers' team conducted the School Sleep Habits survey among boarding students attending an independent high school both before and after their school start time was experimentally delayed from 8 to 8:25 a.m.during the winter term.The delay in school start time led to a significant increase (29 minutes)in sleep duration on school nights, with the percentage of students receiving eight or more hours of sleep on a school night jumping from 18 to 44 percent The research found that younger students and those sleeping less at the start of the study were most likely to benefit from the timetable change.Daytime sleepiness, low mood and caffeine use were all significantly reduced after the delay in school start time.The later school start time had no effect on the number of hours students spent doing homework, playing sports or taking part in activities outside class. And once the earlier start time changed back during the spring term, teens reverted(恢复)back to their original levels.

Beorgers said that these findings are important for public policy."The result of this study add to a growing body of research showing important health benefits of later school start times for adolescents, " she said, " and we have students who are more alert(机敏的), happier, better prepared to learn, and aren't dependent on caffeine and energy drinks just to stay awake in class."

   Color is a daily mystery．ROY G B.IV deals with lots of big﹣picture color questions explaining why hams are often red and why NYC taxis are yellow．Today's question：why are Jeans blue？

First，why"jeans"？Jeans twin names﹣denim and jeans﹣come from the two European ports that supplied two similar fabrics（织物）during the Middle A.ges． Gene fustian was a cotton﹣linen﹣wool blend shipped from genoa．a silk ﹣wool blend called serge de nimes shortened to de nimes or denim， was shipped out of France．B.oth fabrics gradually changed into similar cotton only blends by the 19th century． according to an article titled a short history of denim y historian Lynn Downey． B.oth were used to make men's clothing，valued especially for [their] properly of durability（耐久性） even after many washings"．

In 1873 Levi Strauss teamed up with Jacob Davis to produce jeans，they sold like hotcakes to Gold Rush miners secking a durable uniform for fortune﹣seeking Jeans rapidly came to stand for the character of the A.merican West﹣﹣rank， energetic， rebellions，and capitalistic．

While gold rush miners probably didnt care about how denim looked， they cared a lot about durability，comfort and fit，at the beginning，Straus offered his waist overalls"in two varieties brown cotton"duck"or canvas，and blue denim﹣﹣but by 1911 they'd stopped using cotton duck entirely．As historian Downey explains "once someone had worn a pair of denim pants experiencing its strength． and how the denim became more comfortable with every washing he never wanted to wear duck again； because with cotton duck，you always feel like you re wearing a tent．"

So why are jeans blue？The answer has to do with dye．Unlike most natural dyes that， when heated，penetrate cloth fibers directly indigo（靛蓝）sticks to the cloth's threads．With each washing some of these dye molecules are stripped away，taking bits of the threads with them．The process softens rough fabrics and individualizes the color．This extreme customization made every pair a second skin．

   Cloud computing will be in use by about 80 percent of about 600 companies. The trend suggests that data management and storage are moving to cloud computing sellers on a large scale.

Touting(兜售)cloud computing as a way to get rid of the costs of buying and maintain in on-site information-technology equipment, sellers offer it in the form of Software AsA. Service(SAAS), a delivery model in which software applications are delivered to customers over a web-based network. SAAS can serve the needs of entire companies through huge, web-based platforms. As cloud computing rapidly bccomes the delivery channel for software developers of all shapes and sizes to get their products to market, offering applications in a cloud is now the rule not the exception. A. relatively small number of sellers are able to offer SAAS to big companies that want company-wide cloud computing, and only the sellers need apply. Although market-share data are hard to come by, the list of company’s large enough to offer cloud-computing on this scale is short: Microsoft, Amazon, Google, Salesforce, Rackspace and not many others.

The concentration of data and virtual (虚拟)computing in the hands of relatively few sellers raises an important risk for their customers if the Internet-based systems of any one seller are hacked, the result could be security problems across entire industries in which their customers do

Can this small group of cloud-computing sellers effectively respond to the needs of their customers to quickly fix such a problem and, most importantly, cut off the damage to these companies' own customers? Don't think such things can't happen. If hackers can penetrate the Department of Defense, the risk that they will penetrate Microsoft or google cannot be ruled out Compromise of just one of these sellers---even one with a modest market share---possibly could shut down, at least temporarily, a sizable part of the U. S. economy.

   I never knew much about my mother's father, John leon La Walla. He moved to the city of Melbourne, Australia, in the 1920s, married, and started to raise a family, but died in World War Two. All we had was one framed photo of him dressed in his army uniform.

For some reason, my grandfather had not kept in touch with any of his relatives, although my mother did recall some family names. It wasn't till 1963 that she finally saw her father's grave, in the Albury War Cemetery in New South Wales. I fiercely wanted to know more about this man. Who were his parents？Who were his brothers and sisters？Were any of them still alive and, if so, where were they now？Did they ever wonder what become of our John Leon？

With the advent（到来）of the Internet, I started searching in earnest in the late 1990s. From my grandfather's records in the army, I learned he'd listed his birthplace as Hertfordshire England." I think his surname must have been a false name," my father said. This made me upset but I put it aside, concentrating instead on my father's line. I joined a genealogy（系谱学）website and was soon discovering some of my ancestors from distant relatives. I wrote, “I just wish I could find out about my mother's father now," and told them of my search.

In late 2012, I heard from a very distant relation on my father's side called Julie, from New Zealand. As a genealogist herself, she'd taken pity on me and spent several weeks on research. It was a bombshell when she said she may have found my grandfather's family.

She'd searched English census（人口普查） records and found the surname Waller. The dates and first names matched right down to a brother who'd died on the Western Front. Julie had overcome the false name, traced a whole tree and put me in touch with current﹣day relatives.

"Consider it an early Christmas present," she said. "Julie had done all this very careful research for a stranger. I will be ever grateful."

   Liverpool's weekend Culture Guide is bursting with new music, family fun and a side order of food and drink． We've prepared a handy guide in the coming months here．

Alan McGee's 359 at District﹣Friday February 7，8 pm，£5

Blending classic rock and roll and swaggering Liverpool melodies， they've just returned from London to rave reviews．

Joining them are garage rockers Go Fiasco， Comwall's Black Tambourines and Lcon Fender Walker．

Children's International Festival， Underwater Street， Cunard Building， Pier Head﹣ Sat﹣Sunday，10 am﹣5 pm．£4 Adults，£11 Children

A. fun﹣filled activity day for children at the Underwater Street Discovery Centre．

Activities include face﹣painting Bollywood dance workshops and beautiful box making．

The Children International Festival is encouraged for all ages and to entertain even the adults in various creative workshops．

Wirral Chinese Association City Rendezvous Restaurant， Columbus Quay﹣Sunday

Head to the City rendezvous restaurant on Sunday for some unique oriental entertainment．

The Wirral Chinese association will be hosting in the heart of the restaurant on Columbus Quay．For more details call Henry on 0151 666 4547．

Soccer In The City offers a fascinating insight into the relationship between the city of Liverpool，its citizens and soccer，the beautiful game．

There are two tours，Standard Tour& Matchday Tour．

People are asked to arrive 15 minutes before tours start． bear in mind your tour will involve some short spells of walking there is no stop planned for toilets or snacks for the first hour and you might need an umbrella!

Find out more by contacting Peter on 07954373549 and visiting www．soccerinthecity．co．uk．