Four people in England back in 1953, stared at Photo 51,It wasn't much—a picture showing a black X. But three of these people won the Nobel Prize for figuring out what the photo really showed –the shape of DNA The discovery brought fame and fortune to scientists James Watson, Francis Crick, and Maurice Wilkins. The fourth, the one who actually made the picture, was left out.

    Her name was Rosalind Franklin.” She should have been up there,” says historian（历史学家） Mary Bowden.” If her photos hadn't been there, the others couldn't have come up with the structure.” One reason Franklin was missing was that she had died of cancer four years before the Nobel decision. But now scholars（学者）doubt that Franklin was not only robbed of her life by disease but robbed of credit by her competitors

    At Cambridge University in the 1950s, Watson and Click tried to make models by cutting up shapes of DNA's parts and then putting them together. In the meantime, at King's College in London, Franklin and Wilkins shone X-rays at the molecule(分子). The rays produced patterns reflection the shape.

    But Wilkins and Franklin's relationship was a lot rockier than the celebrated teamwork of Watson and Crick, Wilkins thought Franklin was hired to be his assistant .But the college actually employed her to take over the DNA project.

    What she did was produce X-ray pictures that told Watson and Crick that one of their early models was inside out. And she was not shy about saying so. That angered Watson, who attacked her in return, “Mere inspection suggested that she would not easily bend. Clearly she had to to go or be put in her place.”

    As Franklin's competitors, Wilkins, Watson  and Crick had much to gain by cutting her out of the little group of researchers, says historian Pnina Abir-Am. In 1962 at the Nobel Prize awarding ceremony, Wilkins thanked 13 colleagues by name before he mentioned Franklin, Watson wrote his book laughing at her. Crick wrote in 1974 that  “Franklin was only two steps away  from the solution.”

    No, Franklin was the solution. “She contributed more than any other player to solving the structure of DNA . She must be considered a co-discoverer,” Abir-Am says. This was backed up by Aaron Klug, who worked with Franklin and later won a Nobel Prize himself. Once described as the “Dark Lady of DNA”, Franklin is finally coming into the light.

    When it comes to benefits of volunteering, a lot of people think it's all about the warm feelings after helping someone. {#blank#}1{#/blank#} For example, volunteering...

1）Teaches you new skills

    From helping make websites to teaching kids languages, to arranging events for charity, volunteering can really be almost anything.{#blank#}2{#/blank#} And through overcoming these you learn and start to master completely new skills.

2）Can be relevant work experience

    Something that seems to stop many is that experience often seems to be a prerequisite (必备条件) for some jobs.{#blank#}3{#/blank#} There's many a journalist that gets his or her start through volunteering for a college or university paper, and that's not at all the only profession this applies to.

3）Can be therapeutic (治疗的)

    One of my close friends has completely transformed since she started working for disabled kids.{#blank#}4{#/blank#} It allows you to see the world and other people from a whole different point of view, which in turn can make you grateful for what you already have and see your own personal value.

4）Helps you expand your network

    One of the great things for volunteering is that you meet a wide variety of people.  {#blank#}5{#/blank#} Sometimes it's very convenient to have a broad network.

A. Volunteering helps you grow as a person.

B. As it turns out, that's far from the only benefit.

C. Volunteering can actually help you get the experience you need.

D. Volunteering helps you look outside yourself and your problems.

E. It's a way to prove that you've not just been sitting and doing nothing.

F. That means when you get involved in voluntary work, you will face many challenges.

G. You're getting to know people involved in many different walks in life that you wouldn't have had the opportunity to meet otherwise.

    Many people have long dreamed of being able to fly around as simply as riding a bicycle. Yet the safety and strength of a flying bike was always a big problem. Over the past 10 years, developments in technology have moved the dream of personal flying vehicles closer to reality. Now, two groups of inventors say such vehicles may be available soon.

    The British company Malloy Aeronautics has developed a prototype (原型) of its flying bicycle. Grant Stapleton, marketing sales director of Malloy Aeronautics, says the Hoverbike is able to get in and out of small spaces very quickly. It can be moved across continents very quickly because it can be folded and packed, he adds.

    Mr. Stapleton says safety was the company's main concern. He says the designers solved the safety issue by using overlapping rotors ( 交叠式旋翼 )to power the vehicle.

    The company is testing a full-size prototype of the Hoverbike, which will most likely be used first by the police and emergency rescue teams.

    In New Zealand, the Martin Aircraft Company is also testing a full-size prototype of its personal flying device, called the Jetpack. It can fly for more than 30 minutes, up to 1,000 meters high and reach a speed of 74 kilometers per hour.

    Peter Coker is the CEO of Martin Aircraft Company. He said the Jetpack “is built around safety from the start. In his words, reliability is the most important element of it. We have safety built into the actual structure itself, very similar to a Formula One racing car.”

    The Jetpack uses a gasoline-powered engine that produces two powerful jet streams. Mr. Coker says it also has a parachute (降落伞) that can be used should there be an emergency. “It starts to work at very low altitude and actually saves both the aircraft and the pilot,” he adds. Mr. Coker says the Jetpack will be ready for sale soon.

    Last night Mr. and Mrs. Rojas stayed home. It was cold and rainy and they didn't want to go out in the bad weather. Mrs. Rojas made some popcorn and ice tea. At 8:00, Mr. and Mrs. Rojas went into the living room, sat on the sofa and began the movie and ate and drank. At 8:15, Mr. and Mrs. Rojas realized they already watched the movie last year and they didn't want to watch it again.

    “Now what?” asked Mr. Rojas. “Let's play cards!” answered Mrs. Rojas. At 8:30 Mr. and Mrs. Rojas started to play cards. They were playing for about 10 minutes when Mr. Rojas looked out the window. The rain changed to snow and the trees were covered in beautiful white snow. “I'm happy we stayed home tonight. It looks beautiful outside but this weather is very dangerous to drive in.” said Mr. Rojas. “You're right,” said Mrs. Rojas, “but I'm bored. Let's play some music and dance.”

    Mr. Rojas was surprised. “Dance? But I really don't ….”

    “Oh come on!” Mrs. Rojas insisted. She put on a romantic CD and they both started to dance. They were dancing for about 1 minute when suddenly the music stopped and the lights went out.  Mrs. Rojas laughed. “We're just not very lucky tonight, are we?” she said. Mr. Rojas said, “Of course we're lucky! We are together!” He kissed her and continued to dance with her, in the dark and without music.

    A body image is the way a person views his or her body. It affects how a person “feels” about his or her body. For example, when not looking in a mirror, people have a sense of what their bodies look like. A positive body image is having a realistic and accepting view of your body. However, very few women have a positive body image. Society, dieting, eating disorders, and overweight are all related to a negative body image.

    A century ago, full and curvaceous (曲线美的) bodies were admired. They were also more natural for women to keep. Nowadays, the best female body has a tiny waist, flat stomach, thin legs, and is very slim. Women are told to weight less than ever before. Supermodels are the new women's idols. However, most of them are teenagers, and many of them have eating disorders or diet strictly. Trying to follow these standards is hard to most women. As a result, they starve themselves, or exercise—excessively (过度地), or both.

    Most women who know the standard of beauty and body weight are dieting to reduce weight and change their figures. Eating disorders are not simply unhealthy diet habits; they are considered as mental illnesses and can sometimes end in death. Strict dieting or food restriction combined with a negative body image can become an eating disorder.

    A negative body image can also lead to overweight. This is due to excessive eating to comfort bad feelings about their bodies. In addition, yo-yo dieting, which often follows a negative body image, leads to increasingly higher weights with each diet attempt.

    A negative body image is bad for women. I may help them to see an advisor who is good at treating women with negative body images. Lastly, if society worked on encouraging healthy lifestyles and healthy looking bodies for women, a lot of good would come from it.

    When Oliver Sacks, 82, died on Aug 30 at his home in New York City, the world was saddened by the loss of a brilliant neurologist (神经学者)and a truly beautiful mind.

     London-born Sacks was most famous for his writing. A Forbes obituary (讣告)calls him "one of the greatest writers of science of the past 50 years. Maybe the greatest".

    In his best-selling 1985 book The Man Who Mistook His Wife far a Hat, Sacks described man who could not tell the difference between his wife's face and his hat, because his brain had difficulty telling what he saw.

    In 2006, Discover magazine ranked it among the 25 greatest science books of all time, declaring, "Lots of neuroscientists now looking into the mysteries of the human brain cite (列举)this book as their greatest inspiration."

     His 1973 book. Awakenings, is about a group of patients who were frozen in a decades-long sleep until Sacks tried a new treatment The book led to a 1990 movie in which Sacks by Robin Williams. It was nominated (提名)for Academy Awards.

    Another book. An Anthropologist on Man、published in 1995, described cases like that of a painter who lost his color vision in a car accident but found new creative power in black-and-white images. Sacks also wrote the story of 50-year-old man who suddenly regained sight after nearly a lifetime of blindness. The experience was a disaster. The man's brain could not make sense of the visual world. After a full and rich life as a blind person, he became "a very disabled and miserable (悲惨的）sighted man," Sacks wrote. "When he went blind again, he was rather glad of it."

    Despite the drama and unusual stories. Sacks' books were not meant to be freak shows. "Oliver Sacks humanizes illness…he writes of body and mind, and from every one of his case studies there shows a feeling of respect for the patient and for the illness," Roald Hoffinann, a Nobel Prize-winning chemist, said in 2001.

     When Sacks received the Lewis Thomas Prize for science writing in 2002, the citation (荣誉状)declare, "presses us to follow him into unknown areas of human experience and forces us to realize, once there, that we are facing only oureclves."