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细菌潜伏在我们身边,不过它们太小了,小朋友用肉眼是看不见的。显微镜下的细菌各式各样,有的是球形的,有的是杆状的,还有的是螺旋形的。细菌和小朋友的身体健康息息相关,不同的细菌会造成什么危害呢为什么不能随便吃抗生素为什么不可以随地吐痰小朋友的蛀牙会痛难道也是细菌在作怪想知道就跟着大记者牛吹吹去细菌世界一探究竟吧。