【題目】讀“陸半球地圖”,回答問題。

(1)A大洲居民以________人種為主。

(2)從發(fā)展水平看,B大洲大多為____________國家。

(3)七大洲中,“陸半球地圖”沒有顯示的大洲有大洋洲和_________。

(4)簡述C大洲地勢(shì)與河流的關(guān)系_________。

(5)在某次軍事演練活動(dòng)中,彼得船長駕船從D點(diǎn)依次向正北、正東、正南、正西各行駛了500千米后,發(fā)現(xiàn)只能回到D點(diǎn)的正東面。請(qǐng)用地理知識(shí)向彼得船長解釋不能回到D點(diǎn)的原因:______。

【答案】(1)白色 (2)發(fā)展中(3)南極洲(4)地勢(shì)中部高,四周低,導(dǎo)致河流從中部呈放射狀流向四周(5)經(jīng)線等長,緯線不等長。(或:經(jīng)線等長,緯線長度從赤道向兩極遞減。)

【解析】(1)讀圖可知,A是歐洲,主要人種是白種人。

(2)讀圖可知,B是非洲,由于長期的殖民統(tǒng)治,非洲國家都是發(fā)展中國家。

(3)七大洲中,“陸半球地圖”A是歐洲,B是非洲,C是亞洲,還有北美洲和南美洲的大部分,沒有顯示的大洲有大洋洲和南極洲。

(4)讀圖可知,C是亞洲,亞洲是世界上面積最大的大洲,地勢(shì)特點(diǎn)是中部高,四周低。導(dǎo)致河流從中部呈放射狀流向四周。

(5)經(jīng)線指示南北方向,緯線指示東西方向,由于經(jīng)線等長,緯線的長度不相等。所以不能回到出發(fā)點(diǎn)。

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