But relationships with children and other relatives did not have______（65） effect on survival in the study.

51 A live B die C work D stay

52 A stronger B larger C newer D poorer

53 A which B whom C those D who

54 A at B to C on D by

55 A by B on C of D in

56 A is B are C was D were

57 A However B Once C Further D Moreover

58 A older B richer C some D other

59 A loneliness B longevity C activity D happiness

60 A big B long C old D ago

61 A doubts B questions C studies D tests

62 A taking B including C accepting D offering

63 A if B when C this D that

64 A less B more C very D most

65 A each B every C an D all

参考答案：

51B 52 D 53 D 54 B 55 C

56 B 57 A 58 D 59 B 60 C

61 B 62 B 63 D 64 B 65 C