单项选择题
A.tankers B.holds C.tank D.tanks
()the rise and fall of the tide.A.NoticeB.NoteC.Attenti...
单项选择题()the rise and fall of the tide.
A.Notice B.Note C.Attention D.Look out
Please light the pilot lamp.()up and () down. ()A. Whit...
单项选择题Please light the pilot lamp.()up and () down. ()
A. White;red B. Red; white C. Red; green D. Green ;red
If we have a pilot on board , we should take down () an...
单项选择题If we have a pilot on board , we should take down () and hoist () .()
A. flag H ; flag G B. flag G; flag H C. flag H ; flag Q D. flag G; flag Q