单项选择题

背越式跳高训练中,先练习过杆及落地技术,接着练习起跳技术,再练习助跑技术,最后把这些动作结合成完整技术进行练习,这种练习方法称为单纯分解练习法

A．true
B．false

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As all the people of the world share one earth, industrial countries should be responsible for helping _ and _ countries. ( )

A．developed … underdeveloped
B．developing … underdeveloping
C．developing … underdeveloped
D．developed … underdeveloping

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低碳消费首先需要一种态度，然后形成一种习惯，最后定型为一种价值观。( ) A. 对 B. 错