46. 答案：A。celebrate vt. 庆祝；庆贺。“姐妹三人决定举行一个家庭晚会庆祝父母的银婚纪念。”

45. 答案：B。slight　 adj. 轻微的。如：I have a slight headache. 我有点轻微的头疼。

54.　 It was foolish of him to ________ his notes during that important test, and as a result, he got punished.

　 　A. stick to　 B. refer to　 C. keep to　 D. point to

53. Words ________ me when I wanted to express my thanks to him for having saved my son from the burning house.

　　 A. failed　 B. left　 C. discouraged　 D. disappointed

52. We need to consider what ___ we will be using for language training.

　　 A. abilities　 B. appliances C. facilities　 D. qualities

51. Joe Jones, the eighth of the eight children, had to ________ out of high school at the age of 16 to help his father on the farm.

　　 A. leave　　 B. drop　 C. fall　　 D. go

50. Usually a child's behaviour is a ________ of his family environment

　　 A. recognition B. reflection　 C. return　 D. record

49. The elderly need special care in winter, as they are ________ to the sudden change of weather.

　 　　A. sensitive　 　B. sensible 　　C. flexible　 　D. positive

48.　 I have read the material several times but it doesn't make any ________ to me.

　　　 A meaning　 　B. importance 　C. sense　 　D. significance

47. Finnish President said Finland-China relations had progressed ________ with fruitful co-operation in new and high-tech fields.

　　　 A. peacefully　 B. highly　 C. quietly　 D. smoothly