I believe that we should talk to strangers．By talking with strangers，our lives can be affected in ways that are unusual．

I worked in a restaurant in Chicago，and I spent most of my time on work and hardly joined in"real"conversations．I didn't talk to unknown people．Similarly，I never knew the name of the woman I rode the train with every day，but the process ended in a life-changing way．

One night，an old man，probably in his eighties，came in and sat beside me．I noticed that he came in week after week and always sat beside me．Slowly，I began having short conversations with him．His name was Mr．Rodgers．I learned that he and his wife had gone to dinner and watched a movie every Saturday．After she died，he carried on the tradition alone．I began looking forward to his coming in and telling me his stories．

As the weeks went on，I began to enjoy talking with Mr．Rodgerrs．We talked about his wife，his days flying in the war，and his son who had grown up and moved away．Eventually，we began to talk about my dream and my experience．

About four months after meeting Mr．Rodgers，I received a call from a nurse telling me that Mr．Rodgers was in hospital．He was experiencing an emergency heart surgery．I immediately drove to the hospital to see him．The first thing he did was thank me for helping him so much in his life．At first I didn't know what he was referring to．Then I remembered that about three weeks earlier，he was complaining about chest pains and I gave him the telephone number of a doctor I know．

After meeting Mr．Rodgers，I have learned that strangers can become friends and that life can be much more enjoyable．I recently find myself really talking to customers at the restaurant．I have had a lot more fun，and the time has gone by faster．

21．What does the"the process"in Paragraph 2refer to？___

A．living a lonely life

B．Riding the train every day．

C．Communicating with others．

D．Avo