答案译文：在高中我参加各种竞争性竞技活动，并不断努力进步各项运动的成绩。
In high school I was involved in competitive sports and I always tried to improve in each sport I participated in.
竞技体育竞争性、娱乐性和功利性本质属性的存在决定着其本质功能的存在。
The intrinsic properties of competitiveness, entertainment and utility of competitive sports decide the existence of its intrinsic properties.
竞技体育的一个重要特征是具有极强的竞争性和对抗性。
An important feature of competitive sports is competitiveness and confrontation.
体育，尤其是竞技体育的一个重要特征是具有极强的竞争性和对抗性。
Sports, especially athletics is an important feature of a highly competitive and adversarial.
提出了现代竞技体育成为体育新闻报道主体的主要原因：现代竞技体育的竞争性特点迎合了体育新闻冲突性的价值要求；
Then the reason to why modern sports and athletics can be the principal part of the reports of sports news has been set forward.
提出了现代竞技体育成为体育新闻报道主体的主要原因：现代竞技体育的竞争性特点迎合了体育新闻冲突性的价值要求；
Then the reason to why modern sports and athletics can be the principal part of the reports of sports news has been set forward.
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