【題目】南、北半球的分界線是 （ ）

A. 回歸線 B. 極圈 C. 赤道 D. 本初子午線

【答案】C

【解析】地球上劃分南北半球的依據(jù)是根據(jù)赤道來劃分，赤道以北的地方是北半球，赤道以南的地方是南半球，回歸線是熱帶與溫帶的劃分界線，極圈是溫帶與寒帶的劃分界線，本初子午線是東西經(jīng)度的劃分界線，故選Ｃ.

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