完形填空 通读全文，掌握其大意，然后从各题所给的A,B,C,三个选项中选择正确答案。
A student passed all the entrance examinations before he went to a college where he wrote his __________down for a course in geography, but after the first lecture(讲座), he did not________ any more.
The teacher noticed the student’s absence, and thought that he had changed to _________course. However, he was very surprised at the boy’s name on the list of students who needed to take the examination at the end of the term.
The teacher had prepared a ___________ examination paper, and he wanted to see how this student would answer the questions .He expected bad answers, but it is true that he could find only one small_________.He looked over his paper _________, but he got the same result. So he sent for the student.
_________the student came into the office, the teacher said, “I know that you only attended my first class and after that you have been absent .I’d like to know ___________you got nearly everything right.
“ Oh, I am very sorry about that mistake, sir,” answered the student.__________the examination ,I realized what I had written. But I would not make the mistake if I wasn’t _________ by your first lecture.”
A.number          B. name         C. address
A.turn on         B. turn up     C. turn off
A.other           B. another     C. the others
A.difficult       B. long         C. simple
A.mistake         B. paper        C. name
A.also            B. too          C. again
A.While           B. When         C. before
A.how             B. what         C. whether
A.Before          B. about       C. After
A.careful        B. asked        C. puzzled