史图赏析从 14 0 5年到 14 33年 ,郑和先后七次航海到过东南亚、印度、西亚 ,最远到达非洲东海岸、红海沿岸 (如图所示 )。1)请说出郑和下西洋途中 ,经过哪些主要的海洋、海峡。2 )当时所用船只为帆船 ,在航行过程中要尽可能顺风顺水 ,故郑和下西洋出发的季节多选择在　　 ,此 Appreciation from the history of 1450 to 1433, Zheng He has sailed seven times in Southeast Asia, India, West Asia, the farthest reach the east coast of Africa, the Red Sea coast (as shown). 1) Please say Zheng He on the way down the west, through what major ocean, strait. 2) At the time of the vessel used for sailing, during the voyage to be as smooth as possible, so the departure of Zheng He and the Western seasons are more, this