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This is a PPT background picture of a pine tree surrounded by red ribbons;
Keywords: red ribbon slide background picture, pine tree shape PowerPoint background picture
Learning the spirit of Lei Feng is not a matter of overnight, nor ...
This year is the 100th anniversary of the May 4th Movement. This s...
This set of temporary supplementary deductions for personal income...
This set of party style and clean government construction work rep...
This set of PPT templates for the two conferences in 2019 comprehe...