*Question*
Article: For thousands of years, people have seen things they didn't understand in the sky. The United States Air Force first used the words "Unidentified Flying Object" to describe them. Today everyone uses the term UFO. When people see a UFO, it is usually no more than a weather balloon or an airplane. But the Center for UFO Studies goes on to receive hundreds of reports each year. In 1947 a businessman and pilot, Kenneth Arnold, was flying near Mount Rainier, Washington when he saw nine shiny, round objects flying through the air. He told a newspaper reporter they looked like "pie plates skipping over water." The reporter used the words "flying saucer " in his story and today that is the popular name for UFOs. The Center for UFO Studies lists three kinds of contacts with flying saucers. "Encounters of the first kind" are reports of unknown objects or lights in the sky. People have "Encounters of the second kind" when a UFO leaves burn marks or other signs on the ground. People report "Close encounters of the third kind" when they see aliens in or near a UFO. Question: The Center for UFO Studies _ . Yes or no, is the answer "receive hundreds of reports every year"?
**Answer**
No

*Question*
Article: Researchers are now using 3D printing to create models of the human heart to help heart specialists. The heart doctors can use the models to better help patients before an operation. Dr. Bramlet, a children's heart expert at the University of Illinois College of Medicine, says the 3-D models show information he cannot get any other way. "And so what we've done with the printed models? We've pulled it out of the screen so that you can actually hold it in your hand and evaluate the anatomy ." A 3-D printer uses images from a digital display to create a physical model of a human heart. Matthew Bramlet says doctors can use the model to understand the anatomy. Pictures from medical tests like CAT scan or MRI are sent to a 3-D printer to create a heart in a plaster form. The printer then constructs the heart, thin layer by thin layer. Dr. Bramlet says the model matches the real heart in every detail. "When we're done with the model and made our decision, we want to be able to go back to the source image and confirm those findings," he says. Dr. Bramlet has built model hearts for different kinds of heart operations. All of the operations were successful. In his first case, digital images showed only one tiny hole in a baby's heart. But, the 3-D printed model showed several defects or problems that the baby was born with. Dr. Bramlet says those defects could not be seen easily in the images. The heart surgeon was able to change the type of surgery for the patient based on the 3-D model. He added that 3-D heart models saves time during heart operations. Kathy Magliato is a heart surgeon at Saint John's Health Center in Los Angeles. She welcomes the new technology. She says it could help her make better decisions before she operates on the hearts of her patients. "I can then take this very complicated structure before the operation and I can hold it in my hand and plan an operation around what I'm seeing, touching and feeling. That to me is what can potentially change the game in an operation and save lives." Dr... Question: What is the biggest advantage of 3-D models in the diagnose of heart problems? Yes or no, is the answer "They can help discover the otherwise hidden heart problems."?
**Answer**
No

*Question*
Article: Do you need friends? I'm sure your answer is "Yes,of course. Everybody does! " You need friends when you play and when you work. If you have friends, you will feel happy. If you have no friends. you will feel lonely . Do you know how to make friends? There is only one good way--You make friends by being friendly. A friendly person is interested in other people. He is always helpful If you want to make friends with a new classmate, you can talk with him, tell him about the other classmates in your class and try your best to be helpful to him. Question: If we want to make friends with a new classmate, _ . Yes or no, is the answer "A, B and C"?
**Answer**
No

*Question*
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 scholar and gain entry to Harvard University. Her amazing story has inspired a move , " Homeless to Harvard : The Liz Murray Story ", shown in late April. Liz Murray , a 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.There was never enough food or warm clothes in the house.Liz was the only member of the family 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. " What drove me to survive had to do with understanding , by understanding that there was a whole other way of being.I had only experienced a small part of the society , " 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 for a couple of moths 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 love me all the time." Liz wants moviegoers to come away with the idea that changing your life is " as simple a making a decision." Question: When she wrote " I had only experienced a small part of the society ", she _ Yes or no, is the answer "suggested something she wanted for her life"?
**Answer**
No