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Ⅰ.写作词汇 预习Introduction,Reading & Vocabulary部分的词汇,完成下列小短文 Recently,many people are discussing whether to delay 　　　　　 (退休).There are 　　　 　　　　　　　　　(优缺点)about the issue.Because the old are 　　　　　　　　　　(在增加),it is necessary to have the workers 　　　　　　(退休)a little later.However,if they have to work longer,their body may not 　　　　　　　　(保证)them to 　　　　　　　 (表现)well enough in their jobs. 

retirement

advantages and disadvantages

on the increase

retire

guarantee

perform