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[题目一]图1所示区域在南半球,弧线M为纬线,弧线N为晨昏线,阴影为黑夜;甲乙两地所在经线的经度为120°E;甲地此日正午太阳高度为40°;读图回答1～3题。
[Topic 1] The region shown in Fig. 1 is in the southern hemisphere. The arc M is the weft, the arc N is the twilight line, and the shadow is the night; the longitude of the warp line where A and B is located is 120°E; the altitude of the sun is 40°C. °; Read the graph to answer 1 to 3 questions.