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[题目一]图1中阴影部分与其它部分日期不同,且AB为晨昏线,A的纬度为0°,B的纬度为70°。读图回答1～2题。1.此时,太阳直射点的地理坐标为:A.20°S,45°EB.20°N,45°EC.20°N,135°WD.20°S,135°E2.该日,甲地的昼长是:A.6小时B.12小时C.15小时D.18小时解析:第1题,根据题干中阴影部分与其它部分的日期不同,可知甲点和B点所在经线为日界线,可能是0时经线或180°经线。假设B点所在经线度数为180°,则甲
[Topic one] In Figure 1, the shaded part is different from other parts in date, and AB is the twilight line. The latitude of A is 0 ° and the latitude of B is 70 °. Read the answer to 1 ~ 2 questions. 1. At this point, the geographical coordinates of the direct sun spot are: A.20 ° S, 45 ° EB.20 ° N, 45 ° EC.20 ° N, 135 ° WD.20 ° S, 135 ° E2. On this date, The day length of A is: A.6 hours B.12 hours C.15 hours D.18 hours Analysis: The first question, according to the title of the shadows and other parts of the date is different, we can see that the point A and B where the warp The daily limit may be 0 o’clock or 180 o’clock. Suppose point B where the degree of warp is 180 °, then A