Article: When other nine-year-old kids were playing games, she was working at a petrol station . When other teens were studying or going out , she struggled to find a place to sleep on the street. But she overcame these terrible setbacks to win a highly competitive scholarship and gain entry to Harvard University . And her amazing story has inspired a movie , " Homeless to Harvard : The Liz Murray Story" , shown in late April . Liz Murray , a 22-year-old American girl, has been writing a real-life story of willpower and determination . Liz grew up in the shadow of two drug-addicted parents. There was never enough food or warm clothes in the house . Liz was the only member who had a job . Her mother had AIDS and died when Liz was just 15 years old. The effect of that loss became a turning point in her life. Connecting the environment in which she had grown up with how her mother had died , she decided to do something about it. Liz went back to school. She threw herself into her studies, never telling her teachers that she was homeless . At night , she lived on the streets. " _ she wrote in her book Breaking Night . She admitted that she used envy to drive herself on . She used the benefits that come easily to others , such as a safe living environment , to encourage herself that " next to nothing could hold me down". She finished high school in just two years and won a full scholarship to study at Harvard University . But Liz decided to leave her top university a couple of months earlier this year in order to take care of her father, who has also developed AIDS. " I love my parents so much . They are drug addicts. But I never forget that they loved me all the time." Liz wants moviegoers to come away with the idea that changing your life is " as simple as making a decision". Question: The main idea of the passage is _ . Yes or no, is the answer "how Liz struggled to change her life"?
No

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Article: If you do not use your arms or your legs for some time, they become weak. When you start using them again, they slowly become strong again. Everybody knows this. Yet there are many people who do not seem to know that one's memory works in the same way. When someone says that he has a good memory, he really means that he keeps his memory in practice by exercising it regularly. When someone else says that his memory is poor, he really means that he does not give it enough chance to become strong. If a friend complains that his arms are weak, we know that it is his own fault. But if he tells us that he has a poor memory, many of us think that his parents are to blame, or that he is just unlucky, and few of us realize that it is really his own fault. Not all of us can become very strong or very clever, but all of us can improve our memory by the same means -- practice. Have you ever noticed that people who cannot read or write usually have a better memory than those who can? Why is this? Of course, because people who can't read or write have to remember things: they cannot write them down in a little notebook. They have to remember dates, prices, names, songs and stories, so their memory is exercised all the time. So if you want a good memory, learn from those who cannot read or write: practise remembering. Question: The passage mainly tells us _ . Yes or no, is the answer "how to improve our memory"?
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No

Ques: Article: Last night's meteor shower left many people in the community dissatisfied and demanding answers. According to Gabe Rothschild, Emerald Valley's mayor, people gathered in the suburbs of the city, carrying heavy telescopes, expecting to watch the brightly burning meteors passing through the sky. What they found instead was a sky so brightened by the city's lights that it darkened the light of the meteors passing overhead. "My family was so frustrated," admitted town resident Duane Cosby, "We wanted to make this an unforgettable family outing, but it turned out to be a huge disappointment." Astronomers--scientists who study stars and planets--have been complaining about this problem for decades. They say that light pollution prevents them from seeing objects in the sky that they could see quite easily in the past. They call on people and the government to take measures to fight against it. There is yet a population besides professional and amateur star observers that suffers even more from light pollution. This population consists of birds, bats, frogs, snakes, etc. For example, outdoor lighting severely affects migrating birds. According to the International Dark-Sky Association, "100 million birds a year throughout North America die in crashes with lighted buildings and towers." Countless more animal casualties result from the use of artificial lighting. Clearly, people enjoy the benefits of lighting their evenings. But some scientists think it can be harmful for humans, too. They worry that exposure to light while sleeping can increase a person's chances of getting cancer. Emerald Valley is only one community that is becoming aware of the negative effects of light pollution. For years, Flagstaff, Arizona, has enforced lighting regulations in its city in order to assist astronomers at the Lowell Observatory. Similar efforts have been made worldwide, and a movement is underway to remind us to turn off lights when we are not using them, so that other creatures can share the night. Question: It happened last night that _ . Yes or no, is the answer "the city's lights affected the meteor watching"?
Ans: Yes

Article: Social networking websites are causing alarming changes in the brains of young users, a famous scientist has warned.Sites such as Facebook, Twitter and Bebo are said to shorten attention spans , encourage instant satisfaction and make children more self-centered. Warnings from neuroscientist Susan Greenfield will disturb the millions whose social lives depend on surfing their favorite websites each day.But they will strike a chord with parents and teachers who complain that many teenagers lack the ability to communicate or concentrate away from their screens. More than 150 million use Facebook to keep in touch with friends, share photographs and videos and post regular updates of their movements and thoughts.A further six million have signed up to Twitter, the "micro-blogging" service that lets users exchange text messages about themselves.But while the sites are popular and extremely profitable, a growing number of psychologists and neuroscientists believe they may be doing more harm than good. Baroness Tarot, an Oxford University neuroscientist believes repeated exposure could rewire the brain.Computer games and fast-paced TV shows were also a factor, she said."My fear is that these technologies are weakening the brain to the state of small children who are attracted by buzzing noises and bright lights, who have a small attention span and live for the moment." "I often wonder whether real conversation in real time may eventually give way to these easier and faster screen dialogues, in much the same way as killing and butchering an animal to eat has been replaced by the convenience of packages on the supermarket shelf," she said. Psychologists have also argued that digital technology is changing the way we think.They point out that students no longer need to plan their term papers before starting to write--thanks to word processors they can edit as they go along. A study by the Broadcaster Audience Board found teenagers now spend seven and a half hours a day in front of a screen.Educational psychologist... Question: According to the passage, social networking websites might _ . Yes or no, is the answer "make young users more selfish"?
Yes