单选题 At the policeman's signal, the vehicle pulled up.
  • A. stopped
  • B. slowed down
  • C. sped up
  • D. turned up


【正确答案】 A
【答案解析】[解析] pull up的意思为“(车辆)停下”，所以应选stop。slow down：慢下来；speed up：加 速；turn up：出现。