题目

设，，若“”是“”的充分不必要条件，则的取值范围为______. 答案：【答案】【解析】先解不等式，再根据“”是“”的充分不必要条件，则集合是集合的真子集求解.因为，解得，因为“”是“”的充分不必要条件，所以集合是集合的真子集，又因为，所以，所以的取值范围是. 故答案为：I' ve spent most of my career as a traveling salesman , and so I know that 36 is an occupational (职业的) disease. But one year, my 37 gave me the cure for my homesickness (思家).     It had black bright eyes, a red bow tie and orange feet---a stuffed penguin (企鹅) that 38 about five inches tall. Attached（附在） to its left wing 39 a little sign with the hand-painted declaration "I Love My Dad!". I immediately 40 the penguin on my table.     On my next trip，I put the 41 in my suitcase.That night when I called home , my daughter Jeanine was 42 because the penguin had disappeared. "Honey，he's here with me，"I explained,"1 brought him  43."     44, the penguin came with me---as necessary as my briefcase. And we 45 along the way. In Albuquerque, I checked into a 46, dropped my bag and ran to a meeting. When I returned，the maid had 47 the bed and stood the penguin on the pillow.     One night, I discovered the penguin 48 , and after a mad phone call, I learned I' d 49 it in my previous hotel room，50 it had been rescued by a maid. I 51 a hundred miles to get it，and when I arrived at midnight，the penguin was waiting at the front desk.. In the hotel lobby(大厅)，other tired business travelers were 52 at the reunion of my penguin and me --- I think with a touch of 53.     Jeanine is in college now, and I don’t travel 54. The penguin sits on my table, a reminder that love is a wonderful traveling companion. All those years on the 55, it was the one thing I never left home without. 36. A. cold          B. hunger        C. loneliness        D. fever 37. A. boy           B. daughter       C. friend           D. mother 38. A. stood          B. lay           C. jumped          D. climbed 39. A. wrote          B. turned         C. was            D. had 40. A. threw          B. lost            C. gave           D. placed 41. A. bear           B. penguin         C. dog            D. rabbit 42. A. upset.          B. happy          C. glad            D. exited 43. A. up             B. off             C. along           D. down 44. A. From now on     B. In the future     C. In future        D. From then on 45. A. had friends       B. had neighbors     C. made friends    D. made enemies 46. A. school          B. hotel            C. shop            D. supermarket 47. A. given           B. turned          C. made            D. carried 48. A. sleeping         B. going           C. living           D. missing 49. A. forgot           B. left             C. ordered          D. sent 50. A. there            B. when            C. where           D. how 51. A. ran              B. walked          C. hurried          D. drove 52. A. surprised         B. frightened        C. looked           D. laughed 53. A. anger            B. envy             C. sadness          D. illness 54. A. as many          B. as seldom         C. so little          D. as much 55. A. hotel             B. meeting          C. road            D. house