Article: Jack London is a famous American writer. His most widely known book is the Call of the Wild, the story of the adventure of a large dog in the frozen north. Jack London was born on January 12, 1876, in San Francisco, California. His family was very poor, and Jack had to leave school to make money. He worked hard at many different jobs. Later, Jack returned to school, but he didn't stay. He wrote, "Life and pocket book were both too short." In 1897, he went to Alaska to find gold. Instead, he found ideas there for his book stories. He returned home and started to write. His writings were successful, and he became rich and famous in his twenties. Jack London was not a happy man, however. In poor health, he took his own life in 1916. He was then only 40 years old. Question: Jack London went to Alaska to _ . Yes or no, is the answer "find gold"?
Yes

Article: There is some unwelcome news for students preparing for exams and officers putting in long hours-----you don't need the break as much as you may think that makes you feel less tired. Scientists have long assumed that willpower is a limited resource, which is why you feel the need to have a rest, have a snack and come back to a task when you're feeling better. They argued that the only way to restore willpower was by rest, food or entertainment. But psychologists have challenged this theory, saying weak willpower is all in your head. They found that people's beliefs in willpower determine how long and how well they'll be able to work on a tough mental exercise. "If you think of willpower as something that's limited, you're more likely to be tired when you perform a difficult task," said Prof.Veronika Job. "'But if you think of willpower as something that is not easily used up, you can go on and on." The researchers designed four experiments to test students'-beliefs in willpower. After a tiring task, those, who believed or were led to believe that willpower is a limited resource, performed worse on standard concentration tests than those who thought of willpower as something they had more control over. They also found that leading up to final exam week, students who believed the limited resource theory ate junk food 24 percent more often than those who believed they had more control in resisting temptation . Mr. Job said. "The theory that willpower is a limited resource is interesting, but it has had unintended consequences. Students who may already have trouble studying are being told that their power of concentration is limited, and they need to take frequent breaks. But a belief in willpower as a non-limited resource makes people stronger in their ability to work through challenges.'" The findings could help people who are" battling temptation. Willpower isn't driven by a biologically based process as much as we used to think. The belief in it is what influences your behavior. Question: What have the scientists long believed regarding willpower? Yes or no, is the answer "It is a limited resource."?
Yes

Article: First lady Michelle Obama has some advice for some Tennessee High School graduates: Strike your own path in college and life and work to overcome inevitable difficulties with determination and courage. The first lady told the 170 graduates that she spent too much of her own time in college focusing on academic achievements. While her success in college and law school led to a high-profile job, she said, she ended up leaving to focus on public service. "My message to all of you today is this: Do not waste a minute living someone else's dream,"she said. "It takes a lot of real work to discover what brings you joy... and you won't find what you love simply by checking boxes or padding your GPA ." She said the school reminded her of her own high school experience in Chicago. "My No. 1 goal was to go to a high school that would push me and challenge me," she said. "I wanted to go somewhere that would celebrate achievement. A place where academic success wouldn't make me a target of teasing or bullying, but instead would be a badge of honour." But Mrs. Obama said pitifully that not all students have the same opportunities. "Unfortunately, schools like this don't exist for every kid," she said. "You are lucky." The first lady told graduates that failure may be a part of their college lives and careers, and that how they respond to any difficulties will define them. "That's when you find out what you're really made of in those hard times," she said. "But you only do that if you're willing to put yourself a position where you might fall." Overcoming difficulties has been the hallmark of many great people, she said. "There's this guy Barack Obama... he lost his first race for Congress, and now he gets to call himself my husband." The first lady joked: "I could take up a whole afternoon talking about his failures." Question: Michelle mentioned Obama as an example of _ . Yes or no, is the answer "overcoming difficulties"?
No

Article: The hole in the Earth's ozone layer has until now protected Antarctica from the worst effects of global warming. But scientists have warned that as the hole closes up in the next few decades, temperatures on the continent could rise by around 3oC on average, with melting ice contributing to a global sea level increase of up to 1.4 metres. In the past decades the western Antarctic has seen rapid ice loss as the world has warmed, but the other parts of the continent have, _ , been cooling, resulting in a 10% increase in ice in the seas around the region. This is because the hole in the ozone layer has increased cold winds in Antarctica, making much of the continent surface colder than usual. But now that the gasses that cause the ozone hole have been banned, scientists expect the hole to repair itself within the next 50 to 60 years. By then the cooling effect will have faded out and the Antarctic will face the full impact of global warming. This means an increase in average air temperatures of around 3OC and a reduction in sea ice by around a third. The biggest threat to the continent comes from warming seas. Robert Johnson, a scientist who monitors Antarctica ice sheets, said, "The ice sheets in Antarctica are hundreds of metres thick. But once warm ocean waters start flowing underneath, the ice will begin thinning and could break up very quickly. "Thinning ice sheets cause ice to break away from the continent and to melt even faster. Escaping ice from western Antarctica has already resulted in a 10% rise in global sea level in recent decades. Johnson believes that international action to reduce global warming is required immediately or it may be too late. "Everything is connected - Antarctica may be a long way away but it is an important part of the Earth's system," said Johnson. "It contains 90% of the world's ice, 70% of the world's fresh water and that is enough, if it melts completely, to raise sea levels by 63 metres." Even in a worse-case situation scientists don't expect the ice to entirely... Question: What do scientists think is the biggest danger facing Antarctica? Yes or no, is the answer "Warming sea water temperature."?
No