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【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】

1B

2C

【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°W160°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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