摘要
蝉,也就是我们常说的“知了”,炎炎夏日,它们不停地鸣叫,可能会让人心烦。但你知道吗?蝉从泥土中出来,从幼虫成长为成虫后,等秋风一吹,它们的生命就完结了。
You may have heard the buzz of cicadas in the tree,but what exactly is a cicada and why it makes the noise?Cicadas are large,flying insects that live mostly underground and emerge at lintervals of 1,13,or 17 years.Cicadas can be found on every continent except Antarctica.They 2)thrive in warm environments,especially the tropics such as Latin America,Australia,Southeast Asia and the Western Pacific,and South Africa.The body of a cicada is composed of a head,3)thorax and abdomen.The head features two 4)antennae,two compound eyes,three simple eyes.