答案:

　　1-10 CDCAC CBBAB

　　11-20 BCCAB B CDDA

　　21-30 BC CDA DABCC

　　31-40 CBBAD DDBAB

　　41-50 CCCAA BADDC

　　51-55 CDABC

　　56. smoke →　smoking 57. √ 58. and → or 59. can → can't / can not

　　60. to → for(of) 61. habit 前面加the 62. Because → Once / If

　　63. 第二個it → you 64. thing后加that 65. containing → contained

　　Dear Mr Smith,

　　Recently Mr friend Maria Sta lcy, who was once your student, told me that your school needed a Chinese teacher. I was very glad at the news for I feel like teaching students Chinese in the United States.

　　I was born in Chengdu, China on November 20, 1969. I studied English in Sichuan University from 1987 to 1991. After graduation I came to U.s. in 1991 and began to study in New York University in the same year. I took education as my major and in 1993 I got my Master's degree. After that I began to work in high school. From 1995 to 1997 I teach in Central High School in New York. Since 1997 I have teaching in Lincoln High School in Washington. I am an experienced teacher and I am healthy.