从B栏中选出A栏单词的正确解释。 41. visit A. room or building where books are kept for reading or borrowing 42. dormitory B. surface of a room on which one stands, walks, etc 43. library C. room for sleeping in 44. floor D. area of land where children play 45. blackboard E. go or come to see a person or a place 46. handsome F. room in which meals are eaten 47. bedroom G. building at school or college where students live 48. playground H. structure with a roof and walls 49. dining-hall I. dark-colored board used for writing on with chalk 50. building J. (of men) good-looking