还有其它昆虫如____，也像蚕一样，一生要经过____次变化。

阅读下面文段回答问题。

        I'm Mrs Zhou. I'm a teacher in No. 1 Middle School(第一中学). This is Li Lei. He's Chinese. He is in Class 2, Grade 7. He's my student, and my son(儿子)too. He's twelve.

       That girl is Jean. She's American. She's eleven. And that boy is Jack. He's English. He's ten. They're in Li Lei's class.

I'm their Chinese teacher. All the students and the teachers have two names: an English name and a Chinese name. Li Lei's English name is Tom. My English name is Mary. Their English teacher Miss Jin's English name is Sue. Jean's and Jack's Chinese names are Wei Hua and Zhang Li.

右图是某几何体的三视图，则该几何体的表面积等于(    )

在家庭电路里，插座使用较多，但往往插座或插头处更易发热烧坏插座．这是为什么？

皮肤中参与体温调节的结构有（　　）