严守党的纪律特别是（），保证中央政令畅通。
A、经济纪律
B、政治纪律
C、工作纪律
D、组织纪律
参考答案：B
— Are you pleased with what he has done?
— It couldn’t be ________. He must have put a lot of effort into his work.
A．any worse
B．any better
C．so bad
D．the best
用圆拉刀拉孔，是采用（）原则确定精定位基准。
A.基准重合
B.基准统一
C.互为基准
D.自为基准
