53. A. words   B. word       C. sentences  D. sentence

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

51.A. worried  B. happy      C. angry     D. disappointed（失望）

50. A. easy    B. good       C. different   D. same

48. A. told     B. said       C. talked    D. spoke

49 .A. ago     B. before      C. earlier    D. later

47. A. who    B. whether    C. what      D. which

46. A. a      B. the        C. one       D. some

One day , a young man asked Albert Einstein ,46 great German scientist, 47 the secret(秘密) of success (成功)was .The scientist 48 him that the secret of success is hard work. A few days 49 the young man asked him the 50 question again .Einstein was very 51.He did not say 52,but wrote a few 53 on a piece of paper and 54 it to the young man .The young man looked 55 the piece of paper. On it was 56 :A=X+Y+Z." What 57 this mean?" asked the young man." A means success,"58 the old scientist. "X means hard work, Y means good methods(方法)，and Z…Z mean 59 talking and start to 60."

44. I first met Lisa three years ago when we ____ at a radio station together.

A. have worked      B. had been working    C. were working     D. had worked