79. The custom is u　　　　 　to China.

77. A rainbow appears after a rain, which is a natural p　　　　　　　　　 .

78. Frankenstein is one of the earliest books of science f　　　　　　　　　 .

76.Surgeons(外科医生)have made a great b　　　　　　 　in the liver(肝脏)transplantation.

75.Generally speaking, a　 ________________(宪法) is the basic law of a country.

74. The children’s behaviour is closely ______(相关) to the treatment and training of the child　 in school.

73.A good newspaper　 should have well-trained and ________(可靠的)people working for it.

72.Zhongguancun has had a positive _______________ (影响) on business and science.

71.The car accident has caused _________________(永久的) damage to her eyesight; She will not be able to see things for the rest of her life.