Joseph epstein, a famous american writer,once said'we decide what is important and what is trivial in life we decide that what makes us significant is either what we do or what we refuse todo but no matter how indifferent the universe may be to our choices and decisions, these choices and decisions are ours to make. we decide. we choose.and as we decide and choose, so are our lives formed. in the end, forming our own destiny is what ambition is about do you agree or disagree with him? write an eassay of about 400 words entitled: AMBITION in the first part of your essay you should state clearly your opinion in response to epstein'view in the second give details ........ in the end , give a conclusion...(略写)