为什么凝汽器真空到零后，才可以停止向轴封供汽？

Although I had left school against the advice of my teachers, I had, without telling anyone, tried to  36  my studies in literature at evening classes. It was a tiresome  37  from one end of the city to another and to  38  among adults was uninteresting. I was the youngest in the  39 , so the friendship I knew at school was  40 . I put up with it for a short period. It was  41  long a walk on cold winter’s nights and it was hard to put my  42  into Shakespeare with wet shoes and trousers. So I continued writing poetry at home.
By chance, I  43  some prizes and awards for literature. A young woman from a  44  company came to the college one day. She told me that I won a national poetry award. I  45  at her in astonishment and disbelief. She wanted to make a short  46  about me, to which I said, “ No, I couldn’t do that.” Not that I had any real  47 . I was just frightened. In the end she  48    me that I should do it the following day.
So I did. They made a short film of me reading one of my  49  and I became  50  interested in literature than ever. I  51  what I should do after this, and decided some weeks later that I could not  52  myself spending the rest of my days dealing with machines. So one evening, I hesitatingly told my parents that I wanted to _53  to school. They were greatly surprised and a little afraid, but they did not try to persuade me not to. They wanted to know if I was  54 , and if I knew what it meant and  55  I realized that if I gave up my job training, it would be very difficult to get a good job. But nothing could stop me, and they asked about the matter no further.
36．A．stop                 B．go on                  C．continue        D．walk
37．A．talk                    B．journey               C．job              D．walk
38．A．do              B．sit             C．talk           D．work
39．A．family         B．class           C．city            D．country

20080812

40．A．absent           B．missed          C．lost            D．over

41．A．too             B．very           C．much          D．quite
42．A．mind          B．heart           C．soul            D．thought
43．A．defeated        B．beat            C．won               D．hit
44．A．TV            B．radio            C．shoe            D．food
45．A．looked           B．fixed           C．shouted         D．stared
46．A．talk           B．film             C．conversation     D．speech
47．A．reason         B．cause           C．excuse          D．wish
48．A．advised        B．suggested        C．agreed         D．persuaded
49．A．poems         B．stories          C．speeches        D．plans
50．A．less           B．much          C．far             D．more
51．A．wandered         B．considered      C．discussed        D．wondered
52．A．think          B．consider         C．spend           D．imagine
53．A．drop           B．leave           C．return          D．go to
54．A．sure           B．clear           C．curious         D．true
55．A．whether                       B．that                            C．how            D．what