1.[]One of the responsibilities of the Coast Guard is to make sure that all ships strictly follow traffic rules in busy harbors.A.cautiously B.dutifully C.faithfully D.skillfullyABCD
网友回答
参考答案：B
参考解析：dutifully“守本分地”。cautiously“小心谨慎地”；faithfully“忠诚地”；skillfully“熟练地”。