The well- _________soldiers carried out their orders without question.     
A、disclined
B、 disciplined 
C、disciplining    
D、discipline

单项选择题To get started with our business development, I suggested ( ) some market research first. A、do B、did C、doing D、done

单项选择题水路运输适宜于运距长、运量大，时间要求不太强的各种大宗物资的运输。 A、正确 B、错误