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【题目】读“陆半球地图”,回答问题。

(1)A大洲居民以________人种为主。

(2)从发展水平看,B大洲大多为____________国家。

(3)七大洲中,“陆半球地图”没有显示的大洲有大洋洲和_________。

(4)简述C大洲地势与河流的关系_________。

(5)在某次军事演练活动中,彼得船长驾船从D点依次向正北、正东、正南、正西各行驶了500千米后,发现只能回到D点的正东面。请用地理知识向彼得船长解释不能回到D点的原因:______。

【答案】(1)白色 (2)发展中(3)南极洲(4)地势中部高,四周低,导致河流从中部呈放射状流向四周(5)经线等长,纬线不等长。(或:经线等长,纬线长度从赤道向两极递减。)

【解析】(1)读图可知,A是欧洲,主要人种是白种人。

(2)读图可知,B是非洲,由于长期的殖民统治,非洲国家都是发展中国家。

(3)七大洲中,“陆半球地图”A是欧洲,B是非洲,C是亚洲,还有北美洲和南美洲的大部分,没有显示的大洲有大洋洲和南极洲。

(4)读图可知,C是亚洲,亚洲是世界上面积最大的大洲,地势特点是中部高,四周低。导致河流从中部呈放射状流向四周。

(5)经线指示南北方向,纬线指示东西方向,由于经线等长,纬线的长度不相等。所以不能回到出发点。

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