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This is a PPT background picture of an open book under the blue sky and white clouds;
Keywords: blue sky and white clouds, green grass, textbooks, book slides, background pictures
Rectangular five-colored color block creative cover, multiple sets o...
Cheer for the Olympics, cheer for the Chinese team, cheer for the Ch...
Three friends of the year-old cold: Songzhumei scroll scroll ancient...
Rotating gears form the love, love, waves, KISS little couple, every...
Cowherd and weaver daughter-in-law meeting, confession to loved ones...
Geometric shapes rotate and arrange visual creativity, stylish and v...