第5题: [单项选择]{{I}} Question 7 is based on the following news. At the end of the news item, you will be given 10 seconds to answer the question. Now listen to the news.{{/I}} A. Paris B. New York C. Moscow D. London 参考答案:B 答案解析:[听力原文]
The five cities bidding to host the 2012 Olympic Games are making their closing presentat
第6题: [单项选择]自动放水器水表失灵常见故障原因有()。 A. 污物堵塞 B. 阀尖与阀嘴磨损 C. 阀嘴堵塞 D. 工作压力超过正常排水压力 参考答案:A