A.life in New York
B.country life in New England
C.sea adventures
D.life on the Mississippi
第1题:
No navigational aids are shown and the chart is not kept corrected for alterations in depths inside the pecked lines. For more detailed information,the larger scale charts must be ______.
A.referred to
B.appreciated
C.met with
D.concerned
第2题:
第3题:
第4题:
第5题:
第6题: