LKJ-2000监控装置降级ZTL状态报警时，按(【】)键暂停报警作用。
参考答案：警惕
— There is a story here in the paper about a 110-year-old man.
— My goodness!I can't imagine____that old. [ ]
A. to be
B. to have been
C. being
D. having been
小规模书店在图书市场上应采取( )策略。
A．迎头定位
B．避强定位
C．尾随定位
D．重新定位
