南美洲和北美洲的分界线是（） A．巴拿马运河 B． �

南美洲和北美洲的分界线是（　　）

　 A．巴拿马运河 B．苏伊士运河 C．白令海峡 D．土耳其海峡

答案

A．

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南美洲和北美洲的分界线是（ ） A． 巴拿马运河 B． �

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南美洲和北美洲的分界线是（） A．巴拿马运河 B． �