【单选题】S1:Mr. Pilot, I am captain. This is my first voyage through the Suez Canal. Could you tell me something about the convoy pattern?S2:Well, usually, there are three convoys a day, one northbound convoy ...
【简答题】There are all kinds of festivals and 1 ___________ ( celebrate ) around the world, which are held 2____ different reasons. The ancient festivals were mainly held at three times 3 ____ year. Some festi...