| | 70 | | | | | | | | | | 1. 32 | 2. | 3. | ① 20 | ② 15 | ③ 12 | 4. | ① | | ② | ③ | | | ④ | | | 1. 2017 4 23 9 | 5 | ① | ② | ③ | ④ | 2. 2017 4 24 9 | 5 | ① | ② | ③ | ④ | | | | | | | | | 2017 4 20 | |