题目内容

【题目】读经纬网图，完成下面小题。

【1】甲、乙、丙、丁四点中，位于东半球的点是（　　）

A. 甲、乙B. 甲、丁

C. 丙、丁D. 乙、丙

【2】下列对图中四点的描述，不正确的是（　　）

A. 甲点以北是高纬度地区

B. 乙点在夏至日时出现极昼现象

C. 丙点位于北极点的东南方向

D. 丁点不会出现太阳直射现象

【答案】

【1】B

【2】C

【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。

【1】读图分析可知，图示是以北极点为中心的经纬网图。依据经纬度的判读，图中甲点的经度为45°E，乙点的经度为45°W，丙点的经度为90°W，丁点的经度为135°E；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。由此可判定，位于东半球的是甲点和丁点；结合题意。故选：B。

【2】读图分析可知，图示是以北极点为中心的经纬网图。

甲点纬度为60°N，以北是高纬度地区，故A正确；

乙点位于北极圈上，在夏至日时出现极昼现象，故B正确；

丙点位于北极点正南方向，故C错误；

丁点位于北极圈以内，不会出现太阳直射现象，故D正确。

故选：C。

考查经纬网地图的判读。

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