what are germs? (very first lift-the-flap questions & answers)

　　本商品為硬頁書(Board Book)

　　What are germs? How do they spread? And how do medicines help? Curious young children can take a closer look at those mischievous, microscopic bacteria and viruses in this fascinating introduction to germs and hygiene, with 30 flaps to lift and tips on hand-washing and staying healthy.