假定中央银行允许汇率作清洁浮动，试析下列事件对汇率和价格水平有什么影响？ a．中央银行抛售本

国资产； b．外国价格上涨； c．外国利率提高。 Assume now that the central bank allows a clean float of the exchange rate．Analyze the effectson the exchange rate and on the price level of the following events： a．A selling of domestic assets by the central bank． b．A rise in foreign prices． C．An increase in the foreign interest rate．