| 1. | | 2. | | 3. | 30 | 15 | 4. | 5. | | | 6. | 1. | | 2. | | | ⑴ | ① | a. | b. | c. | | ② | 30 | | ③ | | ④ | | ⑤ 2 | ⑥ | ⑵ | ① | 30 | | ② | | ③ | | ④ 5 | ⑶ | ① | ② | ③ | ④ | ⑷ | ① | ② | ③ | ④ | ⑸ | ① | 30 | | ② | | ③ | | ④ 7 | ⑹ | ① | 30 | | ② | | ③ | ④ 2 | ⑺ | ① | ② | ③ | ④ | ⑤ | | | | | | | |