精选优质文档-倾情为你奉上Passage 1There are stories about two US . presidents，Andrew Jackson and Martin Van Buren，which attempt to explain the American English term OKWe dont know if either story is true，but they are both interesting The first explanation is based on the fact that President Jackson had very little educationIn fact，he had difficulty reading and writingWhen important papers came to Jackson，he tried to read them and then had his assistants explain what they saidIf he approved
