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右图表示某地一天中两个不同时刻太阳光线与地面的夹角,据此判断1～3题。1.该地的纬度位置是()A.70°N B.75°N C.70°S D.75°S2.这一天,太阳直射点的纬度位置是()A.15°N B.20°N C.15°S D.20°S3.当太阳光线处在 a 位置时,国际标准时间是20时,则该地的经度位置是()A.120°W B.经度0° C.60°E D.经度180°此题初看似无处着手,但仔细分析,颇感题目设计之巧妙。首先,太阳光线 b、a 是与正南、正北的夹角,且与正南的夹角(35°)大于与正北的夹角。可分析出,b 是12时的太阳光线,a
The figure on the right shows the angle between the sun’s rays and the ground at two different times of the day. 1. The latitude of the place is ()A.70°N B.75°N C.70°S D.75°S2. On this day, the latitude of the sun’s direct point is ()A.15°N B. 20°N C.15°S D.20°S3. When the sun’s rays are at position a, the international standard time is 20 o’clock, then the longitude position of the place is ()A.120°W B.longitude 0°C .60°E D. Longitude 180° This question seems to have no place to begin at the beginning, but careful analysis makes the subject feel clever. First of all, the sun’s rays b and a are the angles from the south to the north, and the angle (35°) from the south is greater than the angle from the north. It can be analyzed that b is the solar ray at 12 o’clock, a