Article: A 33-year-old financial analyst in California recently quit his job to devote himself to an unpaid job teaching math on the Internet, and his lessons are reaching almost 100,000 people a month. Salman Khan's voice is heard every day on the net -- by tens of thousands of students around the world who are hungry for help learning math. He has posted 1,200 lessons on You Tube --lessons that appear on an electronic blackboard, which range from basic addition to advanced mathematics for science and finance. And they are free. Khan lives in Silicon Valley, with his wife, a doctor, and their new baby. He got the idea for his "Khan Academy" four years ago, when he taught a young cousin how to convert kilograms to grams. With Khan's help, the cousin got good at math, and Khan began a new career. Now, Khan records his lessons himself, but he never goes on camera. "It feels like my voice in their head. You're looking at it and it feels like someone's over your shoulder talking in your ear, as opposed to someone at the blackboard, which is distant from you," he said. When Springfield High School in Palo Alto, California invited Khan to speak in person--he immediately connected to the students there. The idea of short lessons that can be played over and over again attracted high school senior Bridget Meaney. She says she had trouble with math in the seventh grade. "I think the teachers are good, but they can't teach at a speed that's perfect for everyone," she said. "I like the idea of learning something in class but then going back and pressing pause or rewind and actually getting a deeper understanding of it." Originally, Khan kept his lessons short because of YouTube restrictions. Now, he thinks short is better. "Education researchers now tell me that 10 minutes is how long someone can have a high level of concentration. And anything beyond that and your brain switches off," he said. For Khan, teaching math, science, and finance is just the beginning. He says he's ready to expand his YouTube site to include other... Question: Why does Khan never go on camera? Yes or no, is the answer "He wants to create a more relaxed learning atmosphere."?
No

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Article: Americans love dogs, all types of dogs: small dogs, big dogs, lapdogs . Each year, people spend billions of dollars on their four-legged pals, making sure the lovable dogs have enough food to eat and lots of toys to play with. Dogs love people, too. They lick their faces, protect their homes. Where did these four-legged companions come from? Some scientists believe that they have found the answer. Scientists have long known that dogs evolved from wolves. Exactly when the transformation from wolf to dog actually took place, however, remains a mystery. Some said dogs evolved as a separate species 135,000 years ago in two parts of the world. One group of dogs developed in Europe and Asia from Asian wolves. The other group evolved in North, Central, and South America from American wolves. Now researchers say those theories are wrong. New studies suggest that _ dogs first appeared 15,000 years ago in eastern Asia. Scientists also say that every modern dog descended from approximately five female Asian wolves, the mother of all modern dogs. Scientists suspect dogs first set paws in North America by following settlers across a land bridge that once linked northern Asia and North America. Question: From this story, we can conclude that _ . Yes or no, is the answer "dogs are more like wolves than they are like any other animal"?
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No

Ques: Article: New York, the city that never sleeps, fell silent last week--schools were closed; bus and subway services were stopped; flights were canceled, and even the stock market closed for the first time since 1985. All the disorder was caused by one thing, the arrival of hurricane Sandy. This big storm landed on Oct 29 on the US east coast and brought damaging winds, flooding, blackouts and heavy snow. Sandy is one of the largest storms that have ever hit the US, according to the National Oceanic and Atmospheric Administration. By the afternoon of Nov1 (Beijing time), about 140 deaths were caused by the storm as it traveled across the Caribbean islands and into the US. Unlike most hurricanes that happen during summer, Sandy was strengthened not only by warm ocean water, but also by the cold air coming from the northwest. Sandy's power grew because of the difference in masses between the warm and wet air and cool and dry air. It became a kind of "super-storm", the Guardian reported. The flooding was particularly severe. Scientists said it was because Sandy's arrival happened together with a full moon, which normally means higher-than-usual tides . "The most worrying aspect of Sandy is the high tides," Rhode Island Governor Lincoln Chafee told Reuters before the storm arrived. "With the full moon on Monday, with Sandy coming up the bay, we're very concerned about flooding in our low-lying coastal areas." Apart from the power of Sandy itself, another reason why her arrival has caused so much damage is that its target area is crowded with big cities such as New York and Philadelphia. These urban areas are home to tens of millions of people. The flood, the snow and the blackout have brought the country's financial and political centers to a stop. "The size of this alone, affecting a heavily populated area, is history making." Said Jeff Masters, a hurricane specialist. Question: What is the main point of the article? Yes or no, is the answer "To explain why hurricane Sandy was so destructive."?
Ans: No

Ques: Article: A friend of mine, in response to a conversation we were having about the injustices of life, asked me the question: "Who said life was going to be fair, or that it was even meant to be fair?" Her question was a good one. It reminded me of something I was taught as a youngster-life isn't fair. One of the mistakes many of us make is that we feel sorry for ourselves or for others, thinking that life should be fair or that someday it will be. It's not and it won't. One of the nice things about accepting the fact that life isn't fair is that it keeps us from feeling sorry for ourselves by encouraging us to do the very best we can with what we have. Accepting this fact also keeps us from feeling sorry for others because we are reminded that everyone is dealt a different hand; everyone has unique strengths and problems in the process of growing up, facing the reality and making decisions, and everyone has those times that they feel wounded or unfairly treated. The fact that life isn't fair doesn't mean we shouldn't do everything in our power to improve our own lives or the world as a whole. On the contrary, it suggests that we should. When we don't recognize or admit life isn't fair, we tend to feel pity for others and for ourselves, a self-defeating emotion that does nothing except make everyone feel worse. When we do recognize life isn't fair, however, we feel sympathy for others and for ourselves. And sympathy is a heartfelt emotion that delivers loving kindness to everyone it touches. The next time you find yourself thinking about the injustices of the world, try reminding yourself of _ . You may be surprised that it can push you out of self-pity and into helpful action. Question: From the passage, we can learn that the author's attitude to life is _ . Yes or no, is the answer "positive"?
Ans:
Yes