在初级班和提高班两册中都有残局和开局内容，但侧重点不一样。
Increase in primary classes and two classes in all the pieces and start content, but focus is different.
我国的耕地保护工作在不同时期、不同地区的侧重点是不一样的。
In the different period, there are different focus on our country 'policy of protecting cultivated land.
我国的耕地保护工作在不同时期、不同地区的侧重点是不一样的。
In the different period, there are different focus on our country 'policy of protecting cultivated land.
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