One of the responsibilities of the Coast Guard is to make sure that all ships ______ follow traffic rules in busy harbors.

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问题 One of the responsibilities of the Coast Guard is to make sure that all ships ______ follow traffic rules in busy harbors.

选项 A、cautiously
B、dutifully
C、faithfully
D、skillfully

答案B

解析 副词词义辨析题。由traffic rules,busy harbors可知,船只必须严格遵守航运规则,dutifully表示“尽职地,恭顺地”,故B正确。cautiously表示“慎重地”;faithfully表示“忠诚地”;skillfully表示“巧妙地”。
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