金刚石晶体的基元含有几？其晶胞含有几个碳原子？原胞中有几个碳原子？是复式格子还是简单

有关体外排精法避孕，不正确的描述是（）。

A.无绝对禁忌症

B.有早泄倾向者可以使用

C.阴茎退出后不能射精者不宜使用

D.不能预防性传播疾病

E.短时间内重复性交者务必在重复性交前排尿

One summer day my father sent me to buy wire for our farm. At 16, I liked 36 better than driving our truck, 37 this time I was not happy. My father had told me I’d have to ask for credit(赊账) at the store.

Sixteen is a 38 age, when a young man wants respect, not charity. It was 1976, and the ugly 39 of racial discrimination was 40 a fact of life. I’d seen my friends ask for credit and then stand, head down, while the store owner 41 whether they were “good for it.” I knew black youths just like me who were 42 like thieves by the store clerk each time they went into a grocery.

My family was 43 . We paid our debts. But before harvest, cash was short. Would the store owner 44 us ?

At Davis’s store, Buck Davis stood behind the cash desk, talking to a farmer. I nodded 45 I passed him on my way to the hardware shelves. When I brought my 46 to the cash desk, I said 47 , “I need to put this on credit.”

The farmer gave me an amused, distrustful 48 . But Buck’s face didn’t change.   “Sure,” he said 49 . “Your daddy is 50 good for it.” He  51 to the other man. “This here is one of James Williams’s sons.”

The farmer nodded in a neighborly 52 . I was filled with pride. James William’s son.  Those three words had opened a door to an adult’s respect and trust.

That day I discovered that the good name my parents had  53 brought our whole family the respect of our neighbors. Everyone knew what to 54 from a Williams: a decent person who kept his word and respected himself 55 much to do wrong.

36. A. something                B. nothing           C. anything                 D. everything

37. A. and                   B. so                   C. but                  D. for

38. A. prideful            B. wonderful               C. respectful               D. colorful

39. A. intention           B. shadow            C. habit               D. faith

40. A. thus                  B. just                 C. still                 D. ever

41. A. guessed             B. suspected         C. questioned       D. figured

42. A. watched            B. caught             C. dismissed         D. accused

43. A. generous           B. honest             C. friendly           D. modest

44. A. blame               B. excuse             C. charge             D. trust

45. A. until                 B. as                   C. once                D. since

46. A. purchases          B. sales                C. orders             D. favorites

47. A. casually            B. confidently      C. cheerfully        D. carefully

48. A. look                        B. stare                C. response          D. comment

49. A. patiently           B. eagerly            C. easily              D. proudly

50. A generally            B. never              C. sometimes       D. always

51. A. pointed             B. replied            C. turned             D introduced

52. A. sense                       B. way                       C. degree             D. mood

53. A. earned              B. deserved          C. given              D. used

54. A. receive              B. expect             C. collect             D. require

55. A. very                        B. so                   C. how                D. Too

简述集中荷载作用下无腹筋梁“斜拉”、“斜压”、“剪压”的破坏特征。

收集信息的方法有4种；面谈、 【18】 、查阅文献和实地观察实践。

（）是指现行法律法规赋予此项业务范围的金融机构开展的同业资金借出和借入业务。

A、同业借款

B、同业存款

C、同业代付

D、同业存单