单选题 Pirated compact disks and floppy disks remained the second biggest vehicles for the spread of computer viruses despite the governments" determined efforts to______software piracy.
【正确答案】 B
【答案解析】解析：句意：尽管政府在取缔软件盗版上做出了努力，但是盗版光盘和软盘依然是电脑病毒传播的第二大工具。boost“促进，宦扬”；quash“撤销，镇压”；cruse“瓶，壶”；restrict“限制，约束”。根据句意，本题答案为B。