My father often works very hard. And he  31 goes to the movies. Here I will tell you a  32 story about him.

  One afternoon, when he finished his work, and was about to go home, he found a film ticket under the glass on his desk. He thought he  33 to have not much work to do that day and  34 was quite wonderful to pass the evening at the cinema.

  So he came back home and  35 finished his supper. Then he said good-bye to us and left.

  But to our  36 , he came back about half an hour later. I asked him what was the   37  .He smiled and told us about the funny thing that had happened at the  38  .

  Whey my father was sitting in his seat, a woman came to father’s seat and said that the seat was hers. My father was  39 , he took out the ticket and looked at it carefully. It was Row 17, Seat 3. And then he looked at the seat. It was  40 . So he asked her to  41  her ticket. She took out the ticket at once and the seat  42  in it was Row 17, Seat 3.

  Why? What’s the matter with all this? While they were wondering, suddenly the woman said, “The  43 of the tickets are different.”  44  they looked at the tickets more carefully. After a while my father said, “Oh, I am sorry, I made a mistake. My ticket is for the  45  a month ago. Take this seat, please.” With these words, he left.

  31. A. always    B. seldom    C. often      D. sometimes.

  32. A. funny      B. sad     C. bad     D. strange

  33. A. happened   B. liked      C. pretended    D. wanted

  34. A. it        B. this     C. that     D. which

  35. A. early      B. quietly   C. quickly   D. suddenly

  36. A. surprise   B. joy     C. sorrow    D. delight

  37. A. matter      B. date     C. time     D. price

  38. A. hall     B. theatre   C. office      D. cinema

  39. A. interested    B. surprised    C. frightened  D. disappointed

  40. A. different    B. unusual   C. the same   D. strange

  41. A. bring      B. get     C. see     D. show

  42. A. said     B. named    C. told     D. shown

  43. A. designs   B. colors    C. prices    D. owners

  44. A. .But     B. However   C. So      D. Yet

  45. A. exhibition    B. play     C. concert   D. film

 Have you ever wondered why birds sing? Maybe you thought that they were just happy. After all, you probably sing when you are happy.

Some scientists believe that birds do sing some of time just because they are happy. However, they sing most of the time for a very different reason. Their singing is a warning to other birds to stay out of their territory.

Do you know what a “territory” is? A territory is an area that an animal, usually the male(man, instead of woman),claims(声明) as its own. Only he and his family are welcome there. No other families of the same kind are welcome. Your yard and house are your territory where only your family and friends are welcome. If a stranger should enter your territory and frighten(恐吓)you, you might shout. Probably this would be enough to frighten him away.

If so, you have actually frightened the stranger away without having to fight him. A bird does the same thing. But he expects an outsider almost any time, especially at nesting(筑巢)season. So he is screaming all the time, whether he can see an outsider or not. This screaming is what we call a bird’s song, and it is usually enough to keep an outsider away.

Birds sing loudest in spring when they are trying to attract a mate and warn others not to enter the territory of theirs.

You can see that birds have a language of their own. Most of it has to do with attracting mates and setting up territories.

51. Some scientists believe that most of the time birds’ singing is actually_____.

A. an expression of happiness             B. a way of warning

C. an expression of anger                 D. a way of greeting

52. It can be inferred from the text that          

A.Bird’s song is not enough to keep an outsider away

B.Birds sing most of the just because they are happy

C.Birds sing loudest when it’s spring only to warn others not to go into their territory

D.Birds sing mostly to attract mates and set up their territories

53. The underlined word “territory” in the second paragraph refers to      

A. a house where families or friends are welcome.

B. a place where a bird shuts at the top of its voice.

C. an area for which birds fight against each other.

D. an area which an animal or bird says it’s own.

54. Why do birds keep on singing at nesting season?

A. They want to invite more friends of his kind

B. Their singing helps frighten outsiders away.

C. They are frightened in their nests in daytime

D. They want to find if there are outsiders around

55. how does the writer explain birds’ singing?

A. by comparing birds with human beings.

B. by reporting experiment results

C. by writing diaries of birds’ daily life

D. by telling birds’interesting stories.

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