活动

Problem-solving activities is one which studies and researches the social problem in geography field and its application can better reflect the comprehensive feature of the geography activities in class.

解决问题式活动是一种对地理领域中的社会问题进行研究和学习的活动方式，运用这种活动方式能更好地反映地理活动课程的综合性特点。

We Summarize the theoretical studies of long-term solar activity on sunspot cycle, extended cycle, the prediction of solar activity and the asymmetric distribution of solar activity on the hemisphere and present the results of our studies on the long-term solar activity.

本文综述了太阳活动周期、太阳活动延伸周、太阳活动预报和太阳活动在日面上分布等有关太阳长期活动规律的理论研究；

3, the financing cash flow is complemental to investment activities cash flow from each other, the collectivity shows that the company uses method of "borrowing new debt to repay the old debt" to maintain the whole cash flow activities and movements.

其筹资活动与经营活动和投资活动现金流量呈现比较明显的互补关系，总体显示以借新债还旧债方式来维持其整个现金流量活动的运转。