下列表述正确的是    A当南半球是夏季时,北半球是冬季  B太阳能

下列表述正确的是   

A当南半球是夏季时,北半球是冬季  B太阳能够直射的地区,白昼时间最长

C.高纬度地区,各地都会出现极昼、极夜    D.夏至日,北半球昼短夜长

 

答案

A

解析:

 

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