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Professional sportspeople will go to extraordinary lengths to gain an edge over their opponents, But what really works?Cashew nutsKelly Holmes, Britain’s double-Olympic gold medalist, said cashew nuts were her secrets weapon at the Athens Olympics. ‘Cashew nuts are my little secret,’ she said, adding that they helped to boost her powers of recovery so she was fully prepared for her next race. A 50g serving of cashew provides one-fifth of a woman’s daily iron requirements and aroundone-tenth of a man’s zinc needs.Expert Verdict:‘All nuts are a rich source of dietary protein-- needed8．下列关于能量的说法，错误的是（　　）A．有机物中的能量属于化学能B．生物可通过呼吸作用释放生命活动需要的能量C．化学能转化为光能可通过光合作用完成D．人体有机物中储存的能量，归根结底来源于太阳光能