阅读下面短文，掌握其大意，然后从36---55 各题所给的四个选项（A、B、C和D）中，选出最佳选项。
A year ago, I paid no attention to English idioms(习语), though my teacher emphasized (强调)the importance again and again. But soon, the importance of English idioms was shown   36  an amusing experience.
One day, I   37   to meet an English man on the road, and soon we began to talk. As I   38   about how I was studying English, the foreigner seemed to be   39  , gently shaking his head, shrugging (耸一耸) his shoulders, saying, “You don't say!” “You don't say!” I was puzzled. I thought, perhaps this is not an proper topic. Well, I'd  40  change the topic. So I said to him. “Well.   41   we talk about the Great Wall?   42   the way, have you ever  43   there?” “Certainly , everyone back home will laugh at me if I leave China without seeing   44  . It was magnificent.” He was   45  in thought when I began to talk  46  a tourist guide, “The Great Wall is one of the wonders in the world. We are very   47   of it.” Soon I was interrupted again by his order... “You don't say!” I couldn't help asking, “Why do you ask me   48   about it”? “Well, I didn't request you to do   49  ,” he answered, greatly   50  . I said, “Didn't you say 'you don't say'?”   51   this, the Englishman laughed to tears. He began to   52  , “ 'You don't say' actually means 'really?' It is an   53   of surprise. Perhaps you don't pay attention to English idioms.”   54   then did I know I have made a fool of   55   . Since then I have been more careful with idiomatic expressions.

A．in B．for C．by D．to

A．came B．happened C．seemed D．wanted

A．would talk B．had talked C．was to talk D．was talking

A．understood B．understanding C．surprised D．surprising

A．to B．better C．not D．like

A．Shall B．Will C．Must D．Do

A．On B． In C．All D．By

A．gone B．visited C．seen D．been

A．it B．them C．anything D．something

A．losing B．lose C．lost D．losed

A．as B．to C．with D．like

A．glad B．satisfied C．proud D．familiar

A．not talk B．to not talk C．not to talk D．not talking

A．this B．so C．anything D．me a favour

A．encouraged B．frightened C．please D．surprised

A．Heard B．To hear C．Hearing D．Listening

A．explain B．shout C．prove D．say

A．experience B．expression C．explanation D．example

A．From B．Since C．By D．Only

A．me B．myself C．mine D．somebody