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This is a set of safety education day promotion PPT template, April 15th is the National Security Education Day. We must establish safe ideas and concepts from an early age. PPT mainly describes safety precautions on campus, such as: safety of up and down stairs; food safety and safety; traffic safety; safety of inter-class activities;
It is two beautiful brown star light halo snowflake PPT background p...
It is two yellow-green beautiful leaves PPT background picture, home...
This is an elegant pink micro-dimensional paper flower PPT backgroun...
This is a group of black background planet sky cosmic PPT background...
This is a group of transparent blisters starry water grass PPT backg...
This is a blue background glowing snowflake aesthetic PPT background...