user: Article: A study made by University of Sussex found that men and women who frequently used several types of technology at the same time had less grey matter in a key part of the brain . The researchers said : " Simultaneously , using mobile phones , laptops and other media devices could change the structure of our brains . " Worryingly , the part of the brain that shrinks is involved in processing emotion . The finding has linked multi-tasking with a shortened attention span , depression , anxiety and lower grades at school . The researchers began by asking 75 healthy men and women how often they divided their attention between different types of technology . This could mean sending a text message while listening to music and checking email , or speaking on the phone while watching TV and surfing the web . The volunteers were then given brain scans which showed they had less grey matter in a region called the anterior cingulated cortex ( ACC ) . The findings held even when differences in personality were taken into account . The study , published in the journal PLOS ONE , is the first to make a link between multi-tasking and the structure of the brain . Researcher KepKeeLoh said : " Media multi-tasking is become more popular in our lives today and there is growing concern about its impacts on our cognition and social-emotional well-being . " He added that more researches are needed to prove that multi-tasking shrinks the brain . This is because it is also possible that people with less grey matter in the ACC are more likely to use lots of devices simultaneously . Scientists have previously described brain structure can be altered on prolonged exposure to new environments and experience . Other studies have shown that training - such as learning magic or taxi drivers learning the map of London - can increase grey matter densities in certain parts . Question: What's the purpose of the passage ? Yes or no, is the answer "To inform people of the findings of a research ."?
No


Article: Carnival does not take place only in Louisiana. There are many celebrations around the world. In Brazil, the celebration is supposed to go on from the Saturday before Mardi Gras to Mardi Gras Day, but in some Brazilian cities the celebration can last seven or eight days. Just like New Orleans, not many important things are decided in Brazil from New Year's Day to Mardi Gras Day because everyone is preparing for or celebrating carnival. Most Brazilian parades have a subject, which could be political and historical. The parades had to have a subject related to Brazil until 1996. Some cities in Brazil do not have a street carnival but they might have an indoor ball. Bolivia has carnival parades for children and then more parades for adults. The children dress up in costumes and march in the streets. The adults make traditional dance groups and dance in the streets. But the main part of Bolivia's carnival is getting wet. Almost everyone gets wet from water balloons and water buckets. In Oruru, Bolivia, their carnival is held in the last ten days of the carnival season. People there participate in crafts and dancing, but their main carnival event is a ceremonial parade that lasts for twenty hours and parades for four kilometers. Over 20,000 dancers are involved as well as 10,000 musicians. This parade attracts at least 400,000 people. The carnival in Venice, Italy is often regarded as the most carefully prepared carnival and lasts the ten days before Lent  . Many events are held in the canals including shows, concerts, dances, and water processions . The official ending to the celebration is the ball held in St. Mark's Square. Question: From the passage we learn that in Brazil  _  . Yes or no, is the answer "not all cities have a street carnival"?
Yes


Q: Article: The illegal ivory trade has been a major problem in Africa for decades. Poachers  and hunters have killed off hundreds of thousands of elephants to obtain this precious material. Now, affected areas are taking action. The International Union for Conservation of Nature (IUCN) announced on Wednesday that key states where poaching takes place have promised to stop the ivory trade and protect Africa's elephants. In the 1980s, as many as 1 million elephants across Africa were killed for their ivory tusks. This continued until 1989, when the Convention on International Trade in Species (CITES) voted to ban all trade in ivory. With trade , demand for ivory fell. Elephant populations slowly began to increase. However, this progress was short-lived. According to the IUCN, 2011 saw the highest levels of poaching and illegal ivory trading in at least 16 years. Around 25,000 elephants were killed in Africa that year. Preliminary data from the IUCN shows even higher levels of illegal trade may have been reached in 2013. "With about 22,000 elephants illegally killed in 2012, we continue to face a critical situation," said John E. Scanlon, CITES Secretary-General. "Current elephant poaching in Africa remains far too high, and could soon lead to local extinctions if the present killing rate continues." At the African Elephant Summit, key African states where elephants make their home agreed to develop a "zero-tolerance attitude" towards poaching. The deal calls for maximum sentences for poachers and hunters, and increased cooperation between affected states. Officials are determined to classifying wildlife trading as a serious crime -- and to making sure that the people who commit it are punished. All participants at the conference agreed to sign the deal. With these states coming together, there may yet be hope for elephants. (293 words) Question: What's the main idea of this passage? Yes or no, is the answer "A new agreement aims to develop a "zero-tolerance attitude" towards poaching."?
A: No


Article: When the musical sound rings you, you immediately reach for your pocket ready to have a chat. But although you probably use it all the time, have you ever thought about the manners related to talking on the phone? If you haven't, here are some tips to guide you. *Always give the person you are calling plenty of time to get to the phone before you hang up. If the person who answers is not the one you want, give your name and ask if you may speak to the person you want. *Think about the time you call people. Try not to call too early in the morning (before about 9:00) or too late at night (after about 9:30). Also try not to call at mealtimes. *If you go by plane to visit your relatives at Christmas, remember to follow airline instructions. Cell phone must be turned off as soon as the plane doors are closed and remain so until the doors open again on arrival. *When you're face to face with someone, do not talk on the phone. It is rude to be on the phone when a waiter is trying to take your order in a restaurant, or when you are returning the shoes you have just been trying on in a shop. Finish any face-to-face business before taking a call. Continuing to use the phone while nodding to the person in front of you is quite impolite. *When in a restaurant with your friends, keep phone conversations short. Make a call only if it is important. Practice speaking in a low voice. If no one turns to your way, _ . *If you go to a theatre, a concert or a cinema, consider the other people around you. Check that your phone is "off" before you enter. If you are expecting a very important call, put your phone on "vibrate"  and run for the exit as soon as you feel it. If you forget both "off" and "vibrate" and your phone rings, don't answer it, turn it off straight away. Question: What does the underline sentence "... you've got it." mean in the passage? Yes or no, is the answer "You have succeeded in making a call without disturbing others."?


assistant: Yes