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Brief introduction: Beijing University emblem, geometric curved creative cover, hexagonal, rectangular, circular and other shape elements chart, simple flat design, suitable for Peking University graduates reply, thesis defense common ppt template
This is a fine, blue sky and white clouds under the butterfly backgr...
Blue crystal texture, 3d stereo histogram background, data analysis ...
This is a romantic gift of love background PPT template, suitable fo...
Simple and simple, cartoon bear background, romantic love PPT templa...
This is a yellow helmet wearing a hat, in the real estate constructi...
Blue dock harbor inside the boat background, natural scenery PPT tem...