参考答案1-5.ABCCB 6-10. ABABA 11-15. CBBAC 16-20. CBAAB21-25.ACBDD 26-30. CABDA 31-35.BCCAB 36-40. DADBC 41-45. ACDAB46.challenging 47. in 48. teachers 49. helpful 50. used 51. an 52. reading 53. usually 54. and 55. how56. her→hers 57. twelve→twelfth 58. looks→look 59. in→on 60. photo→photos61.the most impoytant thing in life is friendship62.友谊意味着不孤独63.I had a day for sightseeing.64.我开始感到难过65. 如果没有同伴分享，生活就索然无味66. One possible version：Li Hua is my good friend. I became friends with him two years ago.Li Hua is tall but a bit thin. He wears glasses. There’s a big smile on his face all the time. He studies hard and is strict with himself. He’s full of energy. You can often see him playing basketball.Once I was ill at home, He lived far away from my house but he came and helped me with my study. I was moved. He always says. “A life without a friend is a life without sunshineI’m happy to have such a good friend
