【题目】All those entering and leaving the country shall a search by the guards at the port.
A. object to B. submit to
C. contribute to D. apply to
在线课程【答案】B
【解析】
考查动词词组。A. object to反对；B. submit to提交；C. contribute to有助于；D. apply to适用于。句意：凡进出境的，都要接受港口警卫的查验。故选B。