Q: Read the following article and answer the question. Article: Next time you're unhappy or complaining about your life, don't turn to a cheerful comedy. You might find a tear-jerking tragedy is just the thing you need to brighten your day. A team of researchers at Ohio State University, US, has found sad movies can make people happier, Science Daily reported last month. Many people find tragedies make them realize how good their own lives are, the study showed. "People seem to use tragedies as a way to reflect on the important relationships in their own lives," said Silvia Knobloch-Westerwick, leader of the study. "Tragic stories often focus on themes of eternal love, and this leads viewers to think about their loved ones and count their good and helpful things." In the study, researchers gathered 361 college students and showed them the 2007 movie, Alonement. The movie is about two lovers who are separated and finally die during Worid War II. Before and after the movie, the students were asked questions measuring how happy they were with their lives. Researchers also asked them before, afier and three times during the movie to measure various emotions, including sadness. Researchers found that the sadder students felt while watching the movie, the more likely they were to think about real people they had close relationships with in life. This increased their happiness afier watching the movie. Knobloch-Westerwick explained that negative moods make people more thoughtful. "Positive emotions show that everything is fine, you don't have to worry, you don't have to think about problems in your life," she said. "But negative emotions, like sadness, make you think more critically about your situation. So seeing a tragic movie may make you sad, but that will make you to think more about your own close relationships and appreciate them more." The link between watching a tragic story and feeling better has long been recognized. The ancient Greeks even had a word for the feeling of happiness afier seeing something sad that led to the modern English word "catharsis ". The... Question: Why are ancient Greeks mentioned in the passage? Answer:

OPTIONS:
- To introduce the meaning of the word "Catharsis".
- To explain the importance of knowing how to become happier.
- To prove that they were of high intelligence and guessed its meaning.
- To tell readers the relationship between tragedies and happiness was found long ago.

A: To tell readers the relationship between tragedies and happiness was found long ago.

input: OPTIONS:
- self-driving cars are popular nowadays.
- self-driving could be trusted by anyone.
- a special driveway should be built for self-driving cars.
- self-driving cars need improving Now, answer this question: Read the following article and answer the question. Article: You know how much your telephone has changed over the past 10 years? Your car will change even more than that in the next 10 years. One of the biggest changes is that cars will drive themselves. "We certainly have the technology for it now."says Andrew Poliak of automotive technology supplier QNX."We expect self-driving cars to be a mainstream thing between 2020 and 2025." The American company Google has been working on self-driving cars for years. These cars are already on the roads in the United States and are truly self-driving. They have to steering wheels or pedals . Last week, the police ordered one of Google's cars to stop for driving too slowly on a public road. The car was not breaking any law, so no one was punished. Another American company, Tesla, added an "Autopilot" feature to its cars last month. With the Autopilot turned on, the vehicle drives itself. The car will speed up, slow down, _ and drive by itself. You can take over driving any time by turning the steering wheel or touching a pedal. The car uses sensors to know when driveway changing is safe and whether it should speed up or slow down. Tesla Autopilot is made for cross-country driving. It keeps you in the driveway and helps you avoid hitting other cars. It does not work well on local roads, for it will not stop at a red light or stop sign. Reporter Carolyn Nicander Mohr tried the Autopilot feature of a Tesla earlier this month. She had a hard time trusting the car to do what it should do. She thought about disabling the Autopilot feature many times during her trip. She wanted to take control at every bend in the road and hit the brake when the car in front of her slowed down. Yet the car drove perfectly. Other companies are working on self-driving cars, too. Marcedes-Benz, Audi, BMW.Volvo and Toyota all have plans for such vehicles. ,A, B, C, D. Question: From the passage, we can infer that _ . Answer:
A:
output: self-driving cars need improving

Read the following article and answer the question. Article: A nickname is a shortened form of a person's name.A nickname can also be a descriptive name for a person,place or thing,Many American cities have nicknames.Nicknames can also be funny. Los Angeles,California is the second largest city in population,after New York City. Los Angeles has several nicknames.One is L.A.It is also called the City ofAngels because Los Angeles means"the angels"in Spanish. Los Angeles often has warm,sunny, weather.So another nickname is City of Flowers and Sunshine.New York is called The Big Apple.So Los Angeles is sometimes called The Big Orange because ofthe fruit that grows in that city's warm climate. Many films are made in the area of Los Angeles called Hollywood.Millions of people visit the area.So it is also called The Entertainment Capital of the World.No trip to Los Angeles is excellent without seeing the word"Hollywood"spelled out in huge letters on a hillside. Many movie stars live in Los Angeles.The city is sometimes called Tinseltown.This nickname comes from the shiny,bright and often unreal nature of Hollywood and the movie industry.Another nickname for Los Angeles is La--La Land,using the first letters of Los and Angeles. The city of Los Angeles is part of Los Angeles County .There are many smaller cities in the coBnty.A good place for watching unusual--looking people is Venice(after the Italian city of Venice),an area on the west side of Los Angeles. Many people love Los Angeles for its warm sunny weather,beautiful mountains and beaches,and movie stars. Question: _ is the largest in population in America. Answer:

OPTIONS:
- Los Angeles
- Washington
- New York City
- Seattle

Answer: New York City

Problem:OPTIONS:
- It's old but it's clean.
- It's on Tongcheng Street.
- It's beautiful and clean.
- It's quiet and dirty.

Read the following article and answer the question. Article: Dear Peter, I know that you are coming to Hefei next week. Welcome to my home. Let me tell you the way to my house. You will live in Changjiang Hotel on Changjiang Street, won't you? OK! Changjiang Street is a famous and busy street in our city. You can start from your hotel and go straight along Tongcheng Street. You pass two small streets: Hongxing Street and Lujinag Street. When you see an overbridge ,please turn right and go along Huangcheng Street. It's an old street, but it's clean. There's a big park on the street. It's beautiful and clean. When you get to Jinzhai Street, please turn left and go along it. You will pass Wuhu Street and Tunxi Street. Then you can see a KFC on your right. There's a supermarket across from the KFC and my house is near the supermarket. There's a pay phone in front of the KFC. You can call me there and I will go to meet you. I hope you will have a good trip. Yours, Li Li Question: How is the park? Answer:
****
A:
It's beautiful and clean.