第24题: [单项选择]The ( ) is the most widely recognized organization in tourism today. A. World Tourism Organization (WTO) B. International Air Transport Association (IATA) C. International Civil Aviation Organization (ICAO) D. Economic and Social Council of the UN (ECOSOC) 参考答案:A 答案解析:
第30题: [单项选择]Let's learn to use the problem we are facing ______ a stepping-stone to future success. A. to B. for C. as D. by 参考答案:C 答案解析:[解析] 句子的意思为:让我们学会利用我们所面对的问题作为通向未来成功的手段。A项“朝,对”;B项“为了,对于”;C项“当做”;D项“通过,凭借”。