Like most people，I was brought up to look upon life as a getting．It was not until in my later thirties that I made this important discovery：giving-away makes life so much more exciting．One discovery I made about giving away is that it is almost impossible to give away anything in this world without getting something back，though the return often comes in an unexpected form．One Sunday morning the local post office delivered a letter to my home，though it was addressed to me at my office．I wrote the postmaster a note of appreciation．More than a year later I needed a post office box for 4a new business I was starting．I was told at the window that there were boxes left，and that my name would have to go on a long waiting list．As I was about to leave，the postmaster appeared in the doorway．He had overheard our conversation．"Wasn't it you that wrote us a letter a year ago about delivering a special delivery to your home？"I said it was．"Well，you certainly are going to have a box in this post office if you have to make one for you．You don't know what a letter like that means to us．We usually get nothing but complains．"51．At first the author looked upon life as a process of getting．He formed this view of life because ____ ．A．other people were selfishB．he thought it exciting to get from othersC．of his early educationD．of his character52．The author wrote a note of appreciation to the Dost office because ____ ．A．he knew what such a note would mean to the post officeB．he had discovered giving-away made life all the more excitingC．he believed he would get something back by doing soD．the post man delivered an important letter in time53．When the author needed a post-office box， ____ ．A．many had applied for post-office box before himB．he asked to put his name on a waiting listC．he tried to see the postmasterD．he wrote the postmaster a note of appreciation54．The postmaster promised ____ ．A．to make a new post-office box for the authorB．to let the author wait for a post-office boxC．to include the author's name on the listD．to deliver the author's mail to his home55．The postmaster interfered （介入） because ____ ．A．he overheard this conversationB．he had received a lot of complaints for lack of post-office boxC．he was thankful for the letter the author had writtenD．he knew the author years before．