2012年12月7日，美国头号大盘股苹果重挫6.4%，创四年

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2012年12月7日，美国头号大盘股苹果重挫6.4%，创四年来最大跌幅，单日市值蒸发了创纪录的350亿美元。而诺基亚和中国移动联手在中国发布新智能手机的消息，被认为是打击苹果股价的主因之一。这说明

A．股市高风险与高收益同在

B．具有互补关系的商品之间相互制约

C．功能相同或相近的商品可以相互替代

D．价格波动是股票投资收入的唯一来源

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