收音机出境卫生检疫申报应当在出境收音机起飞前向检验检疫机构提交总申报单、货物仓单和其他有关检疫证件。( )
参考答案：对
已知关于x的方程ax+b=c的解为x=2，则|c-2a-b-6|=______．
Most of the big hotels were full at this time of the year, but finally we _____ find a room in one of those
small guesthouses near the station. [ ]
A. ought to
B. could
C. were able to
D. might
