解析 D。解析:早期地球温度极高。A选项频繁的火山爆发会释放大量的热能,使得地球温度升高。B选项强烈的太阳辐射在地球形成初期也会给地球带来热量。C选项小行星的碰撞,在碰撞过程中产生巨大的能量,这也会导致地球温度升高。所以以上三个因素都是早期地球高温的主要原因。反馈 收藏
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