问一道地理题目,大家帮帮忙啊。。。

2025-03-03 12:21:45
推荐回答(4个)
回答1:

其实,这道题,如果看不懂图的话,可以先把图补充完整。即可知,此图为南极点为中心的投影图。
1.当M点与S点重合时,即可以判断为,晨昏线刚好经过南极点,可以判断为春分日或秋分日。则只有A选项符合。
2.N点的经线为东经30°,当M与N重合,且与S点距离最大时,首先可以判断,当M与S点最大时有两种情况,一种是6月22日(北半球夏至日),另外一种是12月22日(北半球冬至日)。则可以判断N地的昼长为0(6月22日),昼长为24(12月22日),C项,正午太阳高度肯定为0。A项考虑的只是6月22日情况,B项错误。

回答2:

1。M点跟S点重合时刚好是春秋分,全球昼夜平分,太阳直射赤道
所以A正确
B长江流域的梅雨季节是6 7月份
C真个时候南极没有极昼,不适合考察
D塔里木河进入汛期是在夏季

2。弧线a为晨昏线,如果要M与N重合,且与S之间距离最大,那么此时太阳直射必定在MN所在经线上,即30°E,如果是150°W,那么就是南极极昼,太阳应该直射南回归线上,MN就不能重合了,所以A错
B此时30°E是正午12点,北京时间与之相差120-30=90°即6个小时,北京在30°E的东边,所以北京时间是12+6=18点 B错
C,此时很明显太阳高度大于0度 正确
D,N地此时没有极昼或者极夜

回答3:

1,当M与S重合,说明,地球转到了春分或秋分日
所以A是正确;
2,与S距离最大,说明了b线为南级圈线,即南级圈出现极夜或极昼,即是到了夏至日或冬至日,地球高度到了北回归线或南回归线
所以A错误,直射可能是东30,也可能是西150
B错误,如果为夏至日,北京时间为18点,如果为冬至日,北京时间为6月23日6点:
C也是错误的,如果是夏至日,N地此时的太阳高度刚好为0,如果是冬至日,不为不为0
D是正确的

回答4:

1. A。当M与S重合时,说明全球昼夜等分,判断出时间为春分或秋分。此时太阳直射点位于赤道,正午太阳高度自赤道向南北两侧递减,故A正确。B描述的是六七月份;C是指我国的冬季,冬至日前后;D是在7-9月,夏季是塔里木河的主汛期。故选A。

2. D。由MN重合时MS距离最大可知,弧线b为南极圈,所以此时南极圈内要么为极昼,要么为极夜,(这一点由于题干条件限制,无法做进一步判断,也不要求判断)因此N地昼长为0或24小时,D正确。A和B都描述的是夏至日那天,而漏掉了冬至日的情况;由于N地当日正午时仍处在晨昏线上,而晨昏线上所有点太阳高度都为0,故C项错。选D。

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