男59岁，缺失，余留牙正常。要求做整铸支架，设计对半卡环，用前腭杆，后腭杆和侧腭杆连

有“血之府库”之称的是（）。

A.心

B.肺

C.肝

D.冲脉

E.女子胞

WHO认为，一个有代表性的社区，其人口数大约在（）。

A.1万～3万

B.10万～30万

C.5万～10万

D.30万～50万

E.1万～10万

第二节完形填空（共20小题；每小题1.5分，满分30分）

阅读下面短文，掌握其大意，然后从各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。

When middle-aged Alex quit his job and made up his mind to become a freelance (self-employed) writer, no one could tell for sure whether he would succeed or not. He found a cold storage room in a building, set up a(n)  36  typewriter and settled down to work.

After a year or so, however, Alex began to  37  himself. He found it was difficult to earn his living by  38  what he wrote. But Alex determined to put his dream to the test --  39  it meant living with uncertainty and fear of  40 . This is the shadowland of hope, and  41  with a dream must learn to live there.

One day Alex got a call, “We need a(n)  42 , and we’re paying $6,000 a year.” $6,000 was  43  money in 1960. It would enable Alex to get a nice apartment, a used car and more.  44 , he could write on the side.  45  the dollars were dancing in Alex’s head, something  46  his senses. He had dreamed of being a  47  -- full time. “Thanks but no,” Alex said  48 , “I’m going to stick it out and write.”

After Alex got off the phone, he  49  everything he had: two cans of vegetables and 18 cents. Alex put the cans and cents into a  50  bag, saying to himself, “There’s everything you’ve made of yourself so far.”

Finally his work was  51  in 1970. Instantly he had the kind of fame and success that  52  writers ever experience. The shadows had turned into limelight.

Then one day, Alex  53  a box filled with things he had owned years before.  54  was a paper bag with two cans and 18 cents. Suddenly he  55  himself working in that cold storage room. It reminds Alex, and anyone with a dream, of the courage and persistence it takes to stay the course in the shadowland.

36. A. expensive    B. priceless            C. excellent           D. used

37. A. doubt                 B. trust                  C. regret                D. hate

38. A. buying               B. selling              C. reading             D. appreciating

39. A. what if        B. now that           C. even though       D. as if

40. A. failure         B. success              C. loss                   D. perspiration

41. A. someone             B. nobody             C. anyone              D. none

42. A. writer                 B. boss                  C. manager            D. assistant

43. A. little                   B. real                  C. false                 D. high

44. A. Still                   B. Besides             C. However           D. Therefore

45. A. If                      B. Because             C. As                    D. But

46. A. cleared        B. destroyed   C. hurt                  D. struck

47. A. writer                 B. dancer        C. driver        D. assistant

48. A. hurriedly            B. slowly        C. firmly        D. hesitantly

49. A. pulled apart  B. pulled out          C. pulled down      D. pulled back

50. A. plastic         B. paper                C. cloth                 D. metal

51. A. published            B. completed  C. written              D. punished

52. A. poor                   B. few                   C. famous              D. great

53. A. picked         B. searched            C. sought        D. found

54. A. Outside        B. Below        C. Inside        D. Above

55. A. reminded            B. called         C. described           D. pictured

皮带拉紧装置的作用是什么？