读东西半球图,完成下列各题。(1)大洲:①_________、② _________、③_________、④_________、⑤_________、⑥ _________、⑦_________。(2)大洋:A______ ___、B___________、C_________、D____________。(3)写出④和⑤两个大洲的分界线:______________、______________、______________、______________。
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