单选题 Pirated compact disks and floppy disks remained the second biggest vehicle for the spread of computer viruses despite the governments' determined efforts to {{U}}quash{{/U}} software piracy.
  • A. boost
  • B. prevent
  • C. crush
  • D. restrict
【正确答案】 D
【答案解析】quash“取消”；A项boost“推进”；B项prevent“防止，预防”；C项rush“压碎，碾碎”；D项restrict“限制，约束”与划线词意思最相近。