One of the responsibilities of the Coast Guard is to make sure that all ships（ ）follow traffic rules in busy harbors.
A、
conveniently
B、
obediently
C、
sufficiently
D、
reluctantly
【正确答案】：B
【题目解析】：
海岸巡逻队的责任就是确保所有的船都___地在繁忙的港口遵守交通规则。既然是责任，而且修饰的是遵守交通规则，也就应该正向的词。conveniently方便地；obediently服从地；sufficiently充分地；reluctantly不情愿地。选B。句意：海岸巡逻队的责任就是确保所有的船在繁忙的港口服从地遵守交通规则。