单选题 Mr. Stephen used to smoke a pack of cigarettes a day, but now he has decreased to half a pack.
  • A. cut off
  • B. cut in
  • C. cut down
  • D. cut across


【正确答案】 C
【答案解析】decrease：减少，和cut down(削减、减少)同义；cut off：(突然)中止、切断；cut in：插话、插入，其后通常跟介词on；cut across：抄近路穿过。