ch16: 18.11 18.17 18.19 18.20

ch17: 15.5 15.21 15.22 15.28 15.32

ch18: 16.13 16.21 16.29 16.32

ch19 19.11 19.20 19.31 19.23 19.24 19.36 19.40

好多哦==