✔ 最佳答案
Chapter 26 Regulation of water content
http://www.sendspace.com/file/3jb5vc
Chapter 27 Regulation of body temperature
http://www.sendspace.com/file/oqqlvz
Chapter 28 Regulation of gas content in blood
http://www.sendspace.com/file/9do4r6
Chapter 29 Regulation of reproductive cycles
http://www.sendspace.com/file/c8dhpv