单项选择题
A.excellent B.very fine C.perfect D.very clear
How do you read? I read you four.（）.A.excellentB.badC.f...
单项选择题How do you read? I read you four.（）.
A.excellent B.bad C.fair D.good
A vessel not using a traffic separation scheme shall av...
单项选择题A vessel not using a traffic separation scheme shall avoid（）by as wide margin as practicable.
A.them B.that C.this D.it
单项选择题A vessel not using a traffic separation scheme shall avoid it by as（）as is practicable.
A.wide a place B.wide a margin C.wide enough D.wide
