In this task, you're given an article, a question which often contains a blank, four options (associated with "A", "B", "C", "D") and the answer to that question. Your task is to classify whether the given answer is correct or not by providing "Yes" or "No", based on the article.

Article: Ask a teacher to name the most annoying invention of recent years and they will often mention the mobile phone. Disturbed by the problems they create, many head teachers have ordered that pupils should keep their phones switched off at school. Others have told pupils to leave them at home. However, education researchers at The University of Nottingham believe it is time that phone bans were reassessed, because mobile phones can be a powerful learning aid, they say. Dr Elizabeth Hartnell-Young and her colleagues have reached this conclusion after studying the consequences of allowing pupils in five secondary schools to use either their own mobile phones or the new generation of 'smartphones' in lessons. During the nine-month experiment, 14- to-16-year-old pupils used the phones for a wide range of educational purposes, including creating short movies, setting homework reminders, recording a teacher reading a poem, and timing experiments with the phones' stopwatches. The smartphones, which could be connected to the Internet, also allowed pupils to access revision websites, log into the school email system, or transfer electronic files between school and home. The research involved 331 pupils in schools in Cambridgeshire, West Berkshire and Nottingham. "At the start of the study, even pupils were often surprised at the thought that mobile phones could be used for learning," Dr Hartnell-Young said. "After their hands-on experience, almost all pupils said they had enjoyed the project and felt more inspired." Some teachers found that pupils who lacked confidence gained most from the project. However, they recognized that greater use of mobile phones in schools could cause problems.
Question: When the students first used mobile phones for learning, they _ .
Options: (A) all enjoyed the project very much (B) didn't know what they were used for (C) didn't fully realize the learning functions of mobile phones (D) were surprised that they were allowed to use mobile phones in schools
Asnwer: C
Yes

Article: Many people say dolphins are very intelligent. They seem to be able think, understand, and learn things quickly. But they are smart like humans or more like cats or dogs? Dolphins use their brains differently from people. But scientists say dolphin intelligence and human intelligence are alike in some ways. How? FACT 1: Talk to Me Like humans, every dolphin has its own "name". The name is a special whistle . Each dolphin chooses a specific whistle for itself, usually by its first birthday. Actually, scientists think dolphins, like people, "talk" to each other about a lot of things, such as their age, their feelings, or finding food. And, like humans dolphins use a system of sounds and body language to communicate. But understanding their conversations is not easy for humans. No one "speaks dolphin" yet, but some scientists are trying to learn. FACT 2: Let's Play Dolphins are also social animals. They live in groups called pods, and they often join others from different pods to play games and have fun ---just like people. In fact, playing together is something only intelligent animals do. FACT 3: Fishermen's Helpers Dolphins and humans are similar in another way: both make plans to get something they want. In the sea of southern Brazil, for example, dolphins use a interesting strategy to get food. When fish are near a boat, dolphins signal to the fishermen to put their nets in the water. Using this method, the men can catch a lot of fish. What is the advantage for the dolphins? Why do they assist the men? The dolphins get to eat some of the fish.
Question: What is the text mainly about?
Options: (A) The comparison between dolphins and humans. (B) The relationship between dolphins and humans. (C) Different types of dolphins. (D) The habitual behavior of dolphins.
Asnwer: C
No

Article: Willie Stewart still remembers his first day of kayaking through the grand Canyon. He was getting bounced around in the roughest white water he had ever seen. There was nothing the river threw at him. There he was in a 40-pound boat, with only a few months of training and one arm. Tied to his left shoulder was a prosthetic limb that he'd had for just about a week. The plan was to paddle for 20 days over 227 miles of the roughest white water in the United States. It was one of the most remarkable adventures that the Grand Canyon had ever seen. It started with a casual phone call in the spring of 2005. A good friend, Mike Crenshaw, finally got a permit from the National Park Service to lead a private party of 16 boaters down the Colorado River that coming August. He had a slot open for Willie, "Was he interested ?" "It was the chance of a lifetime," Stewart said. He had been waiting years for this trip to happen. "How could I refuse ?" But before they set off, Stewart had a couple of things to take care of. He had to get a white-water kayak, learn how to use it, and get an arm. For most of his life, the _ 45-year-old man has lived with only his right arm. He lost his left arm in a horrible accident when he was 18.Stewart was doing a summer construction job inprefix = st1 /Washington,D.C.The trailing end of rope he was carrying got twisted in an industrial fan. Before he could react, the fan reeled in the rope tight and cut his arm just above the elbow. He became a bitter young man, angry at the unfairness of what had happened ,and often got into fights. In time, he learned to channel his rage into sports. He joined a rugby team, established a reputation as a fearless player and eventually was elected captain. His days of rage long gone, he found peace and purpose in his life.
Question: What had urged Willie Stewart to paddle down the Colorado River ?
Options: (A) His family's support (B) His great determination (C) His curiosity (D) His dream
Asnwer: B
No