One of the responsibilities of the Coast Guard is to make sure that all ships __

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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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OneoftheresponsibilitiesoftheCoastGuardistomakesurethatallships__