Suppose you are a French investor, who wants a safe investment in terms of francs. You are investing for one year and the interest rate on a one-year French government bond is 5% and at the same time it is 9% on a U.S. government bond. The exchange rate is currently 6.15 French francs to the dollar. Suppose you invest $1,000 in a U.S. bond. Also suppose that a year from now the French franc/dollar exchange rate is 6.50 French francs to the dollar. what would the exchange rate at year’s end have to be in order for the French investor to earn exactly 4% per year on the investment in U.S. bonds? _________假设您是法国投资者，希望以法郎进行安全投资。您投资一年，一年期法国政府债券的利率为5％，而美国政府债券的利率为9％。目前的汇率是6.15法国法郎对美元。假设您投资1,000美元购买了美国债券。还假设从现在开始的一年里，法郎/美元汇率为6.50法郎兑1美元。为了使法国投资者每年从美国债券中获得的收益恰好达到4％，年底汇率将是多少？ _________