Ronald Hoffman born in 1937 is Polish-born American organic chemist and Nobel laureate . As a theoretical chemist, Hoffmann studied energy levels in chemical bonds during chemical reactions. He put computers to use to solve his problems and, despite the complexity of his research, was able to explain his theories and discoveries to the non-specialist. For his work he was awarded the 1981 Nobel Prize in chemistry, which he shared with Fukui Kenichi. Born in Poland, Hoffmann settled in New York City as a child and became a United States citizen. He received his undergraduate degree in premedical studies from Columbia College in 1958. He attended Harvard University, where he received his PhD. degree in chemical physics in 1962. He joined the faculty of Cornell University in the mid-1960s and remained there throughout his career. Hoffmann and Nobel laureate chemist Robert Burns Woodward developed rules, based on quantum mechanics, to determine how energy levels in atomic electron orbits influence how a chemical reaction takes place. These simple rules, known as the Woodward-Hoffmann rules, allowed chemists to predict reaction results and was quickly accepted and put to use in a wide variety of situations. Hoffmann later turned his research to a variety of problems related to discovering the molecular structure of inorganic and organometallic compounds. Hoffmann is also known for what is called the Isolobal Analogy, which is yet another discovery linking all areas of chemistry. It is useful in predicting the behavior of new molecules based on the orbit structure of the components used to form them. Aided by computers, Hoffmann was able to _ a vast amount of data to support his ideas. Unlike the scientific papers of many chemists, Hoffmann's publications contain little raw data but instead are filled with diagrams and pictures to explain his results. His drawings of shaded balloons to indicate eigenvectors, a unit used in mathematics, are now the accepted scientific notation for illustrating this value. How did Hoffman make his research popular? A) He applied some computer skills to help explain his ideas. B) He established a special computer system to help. C) He drew some forms explaining his ideas. D) He did series of experiments to prove his ideas.
A

Ron Meyer is the president and COO of Universal Studios.As one of the most successful business leaders in Hollywood, he heads up Universal Pictures and Universal Parks & Resorts.He's the guy who oversees the production of Multimillion-dollar extravaganzas likeKing KongandCinderella Man. Meyer's story sounds like the plot of one of his motion pictures.He grew up in a modest home where there was little income.It was a big deal to go to a restaurant.At 15, he quit high school and spent his time hanging out with the neighborhood toughs .He was then a kid quick with his fists who seemed to get into fights somewhat regularly.At one point, he was separated from others with an infectious disease, having no TV and nothing to do.His mother sent him two books.One wasThe Amboy Dukes, a novel about kids in street gangs.The other wasThe Flesh Peddlers, about a guy in the talent agency who lived a successful life."I realized," he says, "that I was no longer that silly kid I had been, and I wanted to change my life." Meyer took any job he could get.He worked as a busboy and short-order cook.He cleaned offices and sold shoes.That attitude made an impression on people.One day he received a call from Paul Kohner, a successful agent who represented stars like John Huston, Charles Bronson and Lana Turner.Their messenger and driver had quit, and they knew Ron was willing to take whatever job they offered. He started the job the next day. Meyer was lucky to work with a good boss--and _ .In nearly six years of driving for Kohner, Meyer became his right-hand man and learned a lot.By the 1970s, Meyer had built many relationships in the business.In 1975, the fate presented an opportunity and he started his own operation Creative Artists Agency, which became a huge success, representing Hollywood legends like Barbra Streisand, Tom Hanks and Tom Cruise. Twenty years later, Meyer was appointed to run Universal Studios, a position far beyond his youthful dream.But once he saw success was possible, he was driven to achieve it.Today,... Which of the following is TRUE according to the passage? A) A talent agency is to oversee the production of movies. B) Ron Meyer did far more successfully than Raul Kohner. C) Relationship is the most important thing in the film industry. D) Meyer had never thought of being as successful as today.
D

Seven years of careful design and planning all came together on Monday, when James Cameron became the first human to make a solo trip to the deepest known point on earth - the Challenger Deep! More importantly though, he appeared safely seven hours later, completing with exciting-photos and videos from this dark mysterious world that has been visited by only two humans before! Seated inside a specially built 12-ton green submersible called the Deep Sea Challenger, the brilliant filmmaker caught every moment of his 2-hour-36-minute journey down to the bottom of the Mariana Trench on video -- given that it is 120 times larger than the Grand Canyon and a mile deeper than Mount Everest. Absolutely nothing! There were no large alien creatures or mysterious footprints -- just a flat desolate landscape, 50 times larger than the Grand Canyon. Mr. Cameron describes it as "devoid of sunlight, any heat, any warmth". The only things swimming around, were some tiny shrimp-like creatures no bigger than an inch. While the 57-year-old had expected to spend six hours at the bottom, he was forced to return in three hours, because the robotic arm that was supposed to help him collect samples went wrong and began leaking oil. He also lost some thrusters and a whole starboard side, causing the submersible to spin around in circles. However, these small setbacks did not make the whole trip any less exciting for Mr. Cameron. The director, who returned to the surface in a speedy seventy minutes, believes this is just one of many trips he and other adventurers will be taking. In fact, Sir Richard Branson, the founder of the Virgin Group, is currently in the midst of planning a similar trip to the Puerto Rico Trench that lies five miles below the surface of the water. Though Mr. Cameron's is promising to move his historic trip into an exciting 3-D National Geographic documentary, he is tight-lipped about how the experience will be used in his next movie! We cannot wait to see! On the bottom of Challenger Deep, _ . A) there are some mysterious footprints B) the landscape is not very large C) there are many fish D) it is dark and cold
D