题目

— Do you smoke?    — No, but I ___________.     A. was used to  B. used to C. am used to  D. don’t   答案：B依据问句中的时态排除A项；依据答语中的no排除C项；由于答语中使用了but，选用D项，就会出现结构错误。故选B。24. puzzling的意思是“令人迷惑不解的、莫名其妙的”；puzzled 的意思是“感到迷惑的”；badly (adv.)的意思是“迫切地、非常”；bad (adj.)的意思是“坏的、不好的”。  通读下面短文，掌握其大意，然后从短文后面的括号内选出可以填入短文空格处的词。     Peter is a famous writer now. But he was not a 1______ student when he was young. He was often late for 2______ and didn't like doing his homework. Sometimes, he slept in class while the teacher was teaching. He didn't understand much, 3______ he always thought he understood everything. One day the teacher 4______ the students a question, "When Mike was ten years old, 5______ brother Bob was twenty, Mike is fifteen now and 6______ is his brother Bob?" Peter said, "That's easy. Bob is twice as old as Mike, so he is now thirty."      Another time, the 7______ in a science class asked, "When it thunders (打雷), 8______ do we always see the light before we 9______ the sound?"      "But Miss," said Peter quickly, "Don't you 10______ our eyes are in front of our ears?" (A. asked  B. why  C. class  D. but  E. his  F. good  G. teacher  H. know  I. how old  J. hear)