第9题: [单项选择]Which vessel may show three lights in a vertical line,the top and bottom being red and the middle being white? () A. A vessel engaged in diving operations B. A pilot vessel C. A vessel trawling D. All of the above 参考答案:A
A. Grateful. B. Impatient. C. Delighted. D. Worried. 参考答案:B 答案解析:[解析] 事实细节题。从第一段第三句Clearly their having to say goodbye as if it's the last time they're going to see