Three years ago, five parrots were set free in a wild place of Arizona, thousands of miles from the Channel Islands in Jersey where they had been looked after by zookeepers. Noevolutionary strategies informed them how to behave in this new landscape ofmountainous pine forest unoccupied by their kind for 50 years. To theresearchers’ surprise, they failed to make contact with a group of wild parrotsimported from Mexico and set free at the same time. Within 24 hours the reintroducing ended infailure, and the poor birds were back in cages, on their way to the safety ofthe Arizonareintroduction programme. Ever since then, the programme has enjoyed greatsuccess, mainly because the birds now being set free are Mexican birdsillegally caught in the wild, confiscated （没收） on arrival northof the border, and raised by their parents in the safety of the programme. Theexperience shows how little we know about the behaviour and psychology （心理） of parrots, asPeter Bennett, a bird researcher, points out: “Reintroducing species of highintelligence like parrots is a lot more difficult. People like parrots, alwaystreating them as nothing more than pets or valuable ‘collectables’.” Now that many species of parrot are in immediatedanger of dying out, biologists are working together to study the naturalhistory and the behaviour of this family of birds. Last year was an importantturning point: conservationists founded the World Parrot Trust, based at Haylein Cornwall, tosupport research into both wild and caged birds. Research on parrots is vital for two reasons. First,as the Arizonaprogramme showed, when reintroducing parrots to the wild, we need to be awareof what the birds must know if they are to survive in their natural home. Wealso need to learn more about the needs of parrots kept as pets, particularlyas the Trust’s campaign does not attempt to discourage the practice, but ratherurges people who buy parrots as pets to choose birds raised by humans. 55. What do we know about the area where the fiveparrots were reintroduced? A. Its landscape is new to parrots of their kind. B. It used to be home to parrots of their kind. C. It is close to where they had been kept. D. Pine trees were planted to attract birds. 56. The reintroducing experience three years ago shows that man-raisedparrots A. can find their way back home in Jersey B. are unable to recognize their parents C. are unable to adapt to the wild D. can produce a new species 57. Why are researches on parrots important according to the passage? A. The Trust shows great concern for the programme. B. We need to know more about how to preserve parrots. C. Many people are interested in collecting parrots. D. Parrots’ intelligence maysome day benefit people. 58. According to the passage, people are advised______. A. to treat wild and caged parrots equally B. to set up comfortable homes for parrots C. not to keep wild parrots as pets D. not to let more parrots go to the wild