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This is a PPT background picture of elegant mountains and lakes;
Keywords: blue elegant natural landscape slide background pictures, lakes and mountains PowerPoint background pictures
This is a set of beautifully designed PPT courseware for party membe...
The cover of the slide template uses blue technology planets, digita...
The cover of the slide template uses a retro pattern as a background...
The front page of the slide template uses a flat drawn computer scre...
The cover of the slide template uses a teapot and teacup pouring tea...
The cover of the slide template uses a blue background color with a ...