小朋友们见过蜘蛛吗?你们知道吗?蜘蛛既是害虫,但同时也是益虫哦!可以说即是好人也是坏人啦!为什么这样说呢?因为蜘蛛会捕食农田里的害虫(但是部分蜘蛛也还是会危害农作物的),中医里还会使用蜘蛛做药材呢!但是从另一方面来说,有些蜘蛛也是有毒的,它们会对人类的安全产生威胁。所以说它即是害虫也是益虫。接下来我们就一起来学学怎么折蜘蛛吧!
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