单项选择题
How do you read ? I read you（）.
A.excellent B.very fine C.perfect D.very clear
单项选择题 How do you read? I read you four.（）.
单项选择题 A vessel not using a traffic separation scheme shall avoid（）by as wide margin as practicable.
单项选择题 A vessel not using a traffic separation scheme shall avoid it by as（）as is practicable.
