Read the following article and select the best answer. Article: Dolphins are interesting animals and researchers find them interesting to watch. They don't have hands, but can use tools to solve problems, just like us. Scientists have observed a dolphin trying to get a shy eel to come out of its hole by poking it with a dead fish. Many species of dolphin live in large societies. They have many different relationships and need a good communication system; they use a variety of sounds to communicate with each other. There is currently no evidence that dolphins have a language of their own. But scientists still have a lot to find out about these animals and so there are certain to be a few surprises in the future. At Kewalo Basin Marine Laboratory in Hawaii, the dolphin team have developed a sign langue to communicate with the dolphins, and the results are amazing. Not only do the dolphins understand the meaning of individual words, they also understand the significance of word order in a sentence. For example, when they were asked to 'touch the ball with your tail and then jump over it' they generally responded correctly and straight away, which showed that they understood the langue. Most mammals seem to enjoy play--but dolphins seems to like making their games as challenging as possible. On a beautiful day in 1997, researchers working at a beach, off the southern coast of Brazil, observed a little dog going into the sea and swimming towards the dolphins. To their surprise, the dolphins approached the dog and then started throwing it into the air. The dog seemed to enjoy the 'game' and continued playing with the dolphins for more than an hour. From then on, different dogs were seem trying to interact with the dolphins. Dolphins live in a very different world to ourselves, but they are very good at our 'intelligence tests'. For example, they will jump out of the water when they hear a whistle noise. They do this because they will get a fish as a reward. There is still much to learn about these flexible problem-solvers, but from the evidence so far, it would seem as though... Question: When they play, dolphins seems to like making their games as _ as possible. - difficult - easy - interesting - relaxing
difficult

Read the following article and select the best answer. Article: Some years ago, a Miami woman walking through an office building noticed two men standing together.Several minutes after her leaving, the men murdered a person working in the building.The police determined that the woman was the only witness and could possibly describe them.However, her memory of the men proved disappointingly unclear.Several days later, psychologist Ronald Fisher was brought in to obtain a more complete account from the woman.His interview produced a breakthrough--the woman reported a clear picture of one of the suspects.The important information enabled the police to arrest the suspect and close the case. The police asked Fisher for help because of his rich knowledge in cognitive interview, a kind of memory - rebuilding process.Memory researchers have found that people trying to remember a past event often only recall part of the relevant information.Human memory is selective and it is often _ by stress.But a person's accurate recall of an event or understanding of a question can be improved using specific interviewing techniques.The "cognitive interview" was developed in the late 1990s.It encourages the witness to take an active role in recalling information rather than giving answers only to someone else's questions.The witness first describes what happened in his or her own words, with no interviewer interruptions.The interviewer then goes further with specific techniques, such as having the witness tell the details of what happened from different perspectives . The cognitive interview focuses on guiding witnesses through four general recalling techniques: thinking about physical surroundings and personal feelings that existed at the time of past events; reporting everything that connects to mind about those events, no matter how broken it is retelling events in a variety of time orders, such as from beginning to end, end to beginning, forward or backward; and adopting different perspectives while recalling events. Experiments with police detectives trained in this demanding interview... Question: The key point in a cognitive interview is that _ . - the witness is encouraged to take part in recalling information. - the interviewer should interrupt the witness from time to time. - the interview should take place outside the police station. - the witness should recall details at the scene of the event.
the witness is encouraged to take part in recalling information.

Read the following article and select the best answer. Article: As a youngster, there was nothing I liked better than Sunday afternoons at my grandfather's farm in western Pennsylvania. Surrounded by miles of winding stone walls, the house and field provided endless hours of fun for a city kid like me. I was used to tidy living rooms that seemed to whisper, "Not to be touched!" I can still remember one afternoon when I was eight years old. Since my first visit to the farm, I had wanted more than anything to be allowed to climb the stone walls surrounding the houses. My parents would never _ . The walls were old; some stones were missing, others loose and falling. Still, my idea to climb across those walls grew so strong that finally, one spring afternoon, I had all my courage to enter the living room, where the adults had gathered after Sunday dinner. "I, uh-I want to climb the stone walls," I said. Everyone looked up. "Can I climb the stone walls? "Immediately voices of disagreement went up from the women in the room. "Heavens, no!" You'll hurt yourself!" I wasn't too disappointed; the response was just as I'd expected. But before I could leave the room, I was stopped by my grandfather's loud voice. "Now hold on just a minute," I heard him say. "Let the boy climb the stone walls. He has to learn to do things for himself." "Go," he said to me, "and come and see me when you get back." For the next two and a half hours I climbed those old walls -and had the time of my life. Later I met with my grandfather to tell him about my adventures. I'll never forget what he said. "Fred," he said, smiling, "You made this day a special day just by being yourself. Always remember, there's only one person in this whole world like you, and I like you exactly as you are." Many years have passed since then, and today I host the television program Mister Rogers' Neighborhood, seen by millions of children throughout America. There have been changes over the years, but one thing remains the same: my message to children at the end of almost every visit. "There's only one person in this whole... Question: When the writer was small, he lived _ . - in the city - on the farm - with his grandparents - away from his parents
in the city