✔ 最佳答案
Bruce Chan' suggested answer for 2009 cert-level economics:
1B 2A 3B 4D 5B
6D 7A 8A 9C 10C
11A 12B 13B 14B 15A
16C 17D 18A 19D 20D
21C 22D 23D 24C 25B
26A 27A 28C 29A 30B
31B 32C 33A 34B 35C
36C 37C 38A 39D 40D
41C 42C 43D 44C 45D
46C 47B 48A 49B 50D