input: OPTIONS:
- is needed in many countries
- is needed in every country
- can be used in many ways
- is very important for factories Now, answer this question: Read the following article and answer the question. Article: Many places in the world need more fresh water . Every country is trying to find ways to turn salt water into fresh. Why aren't there many factories like the Symi factory? In some places, the sun isn't hot enough, or it doesn't shine every day. In these places other ways to heating sea water can be used. These ways cost more money, but they work faster than the sun. By boiling sea water with high heat,a lot of fresh water can be made quickly. But heating is not the only way to get fresh water from salt water. Other ways are tried. One way is freezing . The fresh part of salt water freezes first. To get fresh water, the pieces of ice are taken out. Which way is best? The one that gives the most water for the least money. It may be a different way for each place. Symi's way seems very good for small, hot places. It doesn't make very much water at a time. But the factory is easy to build and cost little. Question: From the passage we know that fresh water . Answer:
A:
output: is needed in every country

input: OPTIONS:
- Mona Lisa can also sing in Chinese
- 3D made Mona Lisa move and speak
- 3D made Leonardo da Vinci alive in the exhibition in Beijing.
- in the picture Last Supper, Leonardo da Vinci can walk in his room Now, answer this question: Read the following article and answer the question. Article: Art lovers around the world have thought about this question for so many years: what is the secret behind the Mona Lisa's smile? However, they can ask Mona Lisa herself in the interactive exhibition in Beijing. This exhibition brings the 500-year-old painting to life. Now Leonardo da Vinci's famous painting can move her head and wave her hand in 3D, and even answer questions. She can answer the questions about her life, her age and so on. But when she talks she doesn't speak Italian but Chinese like: "Da jia hao, wo jiao Mengna Lisha. Hen gao xing jian dao ni men." The new, digital picture of Mona Lisa is the center piece of the World Classic Interactive Arts Exhibition in Beijing. You can also see other world-famous paintings such as Leonardo da Vinci's Last Supper. Last Supper is another picture that they made alive with 3D. In this picture, Jesus can walk and talk with his believers . It took the organizer Wang Hui and over 400 digital artists in South Korea two years to make the picture, at a cost of around 50 million yuan. He says, "What's special about it is that it's the first time to use computer technology to make her speak and move." So what does the Mona Lisa say if you ask her why she is smiling? Question: From the passage we know _ . Answer:
A:
output: 3D made Mona Lisa move and speak

input: OPTIONS:
- teaching the five children himself
- asking the five children to find a new teacher
- telling the five students to work harder than ever before
- telling the teacher the five students were the best in the class Now, answer this question: Read the following article and answer the question. Article: A famous study was done in a school by a professor from a university. At the start of the school year, the teachers were given the names of five children. They were told that these five were the most excellent students in the class. But the fact was that these students were only average,and they were not the best students at all. Well, guess what? At the end of the year, all the five average students scored among the highest in the class. What made these average students change so much to become top students?The only difference was the change in their teachers' attitude. Because the teachers believed that these five kids were the top students,they expected more from them. And so these five average students began to believe and expect more from themselves. So they worked harder to do as well as they could. Do you know why? If you expect the best from people, they'll usually want to give you their best. A great leader said, "Treat a person just how he appears to be on the outside, and you'll make him even worse. But treat a person like he's already a success,and you'll help make him the best he can be." Like the true story of 7-year-old Johnny, his teacher got so angry with him that one day she said,"Johnny,you're the naughtiest boy in this class. I'm sure you'll never change." The next year Johnny had a new teacher. And on the first day of class,she met with Johnny after school and said,"Johnny, I've heard a lot about you! But do you know that I don't believe a word of it." And every day after that, this new teacher treated Johnny as if he was one of the smartest students even when Johnny did naughty things. Later on, Johnny became a school leader. Because that's the power of our belief and attitude toward children. Question: The professor started his research by _ . Answer:
A:
output:
telling the teacher the five students were the best in the class