[题目]关于我国首都北京位置的叙述正确的是( ).A.位于北半球.中纬度B.位于东半球.高纬度C.位于西半球.中纬度D.位于南半球.高纬度题目和参考答案——青夏教育精英家教网—

【题目】关于我国首都北京（40°N,116°E）位置的叙述正确的是（　　）。

A.位于北半球，中纬度B.位于东半球，高纬度

C.位于西半球，中纬度D.位于南半球，高纬度

【答案】A

【解析】

根据由经线和纬线相互交织所构成的网络叫做经纬网，利用经纬网可以确定地球表面任何一个地点的位置．在经纬网上，经线的度数叫做经度，若相邻两条经线的经度向东增大，就是东经，用符号E表示，若相邻两条经线的经度向西增大，就是西经，用符号W表示；纬线的度数叫纬度，若相邻两条纬线的纬度向北增大，就是北纬，用符号N表示，若相邻两条纬线的纬度向南增大，就是南纬，用符号S表示，进行分析解答。

东西半球分界线是20°W和160°E组成的经线圈，20°W以东、160°E以西为东半球，20°W以西、160°E以东为西半球；南北半球的划分是以0°纬线即赤道为界，赤道以北为北半球，以南为南半球；按纬度划分，0°～30°为低纬度地区，30°～60°为中纬度地区，60°～90°为高纬度地区。依据我国首都北京的经纬度（45°N，116°E）可知，北京位于东半球、北半球、中纬度。根据题意。故选：A。

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