阅读我国部分城市分布及其降水量柱状图(如图),回答下列问题:
生物体的基本组成物质中,作为生命活动主要承担者的是( )
A park is the best place ______ kites. I often go there at weekends.
下列实验操作:①过滤 ②溶解 ③蒸馏 ④取用药品 ⑤萃取 ⑥配制一定浓度的溶液,一定要用到玻璃棒的是( )
He hurried to the station only _______ that the train had left.