答案:Love of change is closely tied to faith improvement. Americans have always been optimistic, believing in the perfectibility of people, the basic goodness of their country, and the ability of American ingenuity to improve the quality of life.Most Americans have great vigor and enthusiasm. They prefer to discipline themselves rather than be disciplined by others. They pride themselves on their independence, their right to make up their own minds. They have courage and do not give in easily. They will take any sort of job anywhere rather than be unemployed. They do not care to be looked after by the government.Americans have a warmth and friendliness which is less superficial than many foreigners think. They are considered sentimental. When on ceremonial occasions they see a flag, or attend parades celebrating America's glorious past, tears may come to their eyes. Reunions with family and friends tend to be emotional, too. They like to dress correctly, even if "correctly" means flamboyantly. They love to boast, though often with tongue in cheek. They can laugh at themselves and their country, and they can be very self-critical, while remaining always intensely patriotic. They have a wide knowledge of everyday things, and keen interest in their particular city and state. Foreigners sometimes complain, however, that they have little interest or knowledge of outside world.