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paperback. Condition: New. Language:Chinese.Paperback.Pub Date:2020-02-01 Publisher: Shaanxi People's Education Publishing House Why do the street lights usually glow yellow??What is the intensity of light??Why do plants need light to grow??Sunlight is composed of several colors??Can we use sunlight to create our own rainbow??The popular popular science pop-up book series of the famous British children's book publishing group. The paper arts such as pull. flip and three-dimensional designed in the book perfectly convey.