填空题

Part A For questions 1 - 5, you will hear a passage. While you listen, fill out the blanks with the information you have heard. Some of the information has been given to you before the blanks. You will hear the recording twice. You now have 25 seconds to read the questions below. The number of the citizens over 65 in the US is increasing rapidly because ________________.

【参考答案】

people are living longer than before