在抽样调查设计中，通常情况下，采用随机化抽样获得样本调查对象。目前常用随机抽样方法有

“独在异乡为异客，每逢佳节倍思亲。遥知兄弟登高处，遍插茱萸少一人。”这首诗描写的我国传统节日是  [ ]

A．中秋节    

B．春节    

C．端午节    

D．重阳节

2010年世博会在上海开展，请你为山东展馆撰写一个宣传主题词，要能体现山东的文化特色，语言工整简洁，不超过20个字。（4分）

完型填空 (每小题1分，共20分)

My parents made me know the ideas of family, faith and patriotism (爱国主义) when I was young.  26  we lived a hard life, they  27 great importance to making us realize how  28  we were to live in a great country with  29   chances.

I got my first real  30  when I was ten. My dad injured his back working in a factory and had to be  31  so that he could take up a new job as a hairstylist. When he hadn’t got enough money to rent a shop, the owner of the shopping center gave Dad a(n)  32  . But he should clean the parking lot (停车场) three nights a week, which meant getting up at 3 a.m. To pick up waste, Dad used a little  33  that looked like a lawn mower (割草机). Mom and I emptied garbage cans and  34  waste by hand. It took two to three hours to clean the lot. I’d  35   in the car on the way home because of tiredness.

I did this for two years, but the  36  I learned have lasted a lifetime. I  37  discipline (纪律) and a strong work ethic (道德准则), and learned at a(n)  38  age the importance of  39  interests in life -– school, homework and a job. This really __40  during my senior year of high school, when I worked 40 hours a week at a fast-food restaurant while taking school  41  and preparing for my college examination.

The hard work was   42 . As a result, I attended the U.S. Military Academy and went on to receive graduate degrees in  43  and business from Harvard. __44  , I joined a big Los Angeles law firm and was elected to the California State Assembly (会议). In these jobs and in everything else I’ve done, I have never forgotten those  45  in the parking lot.

26. A. Now that                       B. As if                                      C. Even                               D. Even though

27. A. attached                B. announced                       C. suggested                 D. admitted

28. A. important                        B. surprising                     C. fortunate                  D. satisfying

29. A. several                            B. limitless                       C. few                         D. energetic

30. A. incident                          B. dream                         C. success                          D. job

31. A. retrained                         B. regarded                      C. considered                D. respected

32. A. increase                            B. order                          C. discount                   D. explanation

33. A. bag                                B. machine                       C. knife                        D. stick

34. A. brought up                      B. turned up                      C. made up                   D. picked up

35. A. sleep                         B. talk                                  C. study                             D. sing

36. A. knowledge                      B. information                     C. lessons                     D. skills

37. A. required                         B. acquired                      C. remind                 D. forgot

38. A. common                         B. legal                                 C. old                                D. early

39. A. balancing                        B. expressing                         C. supporting                D. increasing

40. A. turned                            B. changed                             C. helped                      D. improved

41. A. measures                          B. courses                        C. messages                  D. tours

42. A. encouraging                      B. disappointing                      C. discouraging                 D. rewarding

43. A. law                                B. medicine                     C. science                          D. arts

44. A. However                         B. Indeed                            C. Later                             D. Before

45. A. people                            B. nights                         C. cars                               D. opportunities

计日工是处理工程变更(估价)的一种特殊形式。

喷嘴—档板机构喷嘴后的气容称为（）

A、气阻

B、喷嘴背压室

C、节流盲室

D、节流通室