5. 外交休兵。(5分)

1.守勢國防(5分)

2.刺蝟戰術。(5分)

3. 綜合性安全。(5分)

4.活路外交。(5分)

(A) (5 points) Calculate the tariff imposed by the country.

(B) (5 points) Calculate the tariff revenue.

(C) (5 points) Calculate the consunption distortion loss.

(D) (5 points) Calculate the production distortion loss.

(A) (15 points) Suppose scientists fnd that the scent of this specific kind of follower can cure mental disorders. Hence, for each unit of the quantity demanded brings $80 external benefit. Assume the world price pw is $60 and is not affected I by Country A's policies. Considering this external beneft, should Country A export or import how many units of this good? Please draw a graph and label all relevant points. Also, please show your calculation.

(B) (5 points) How can the government deal with the issue of the external benefit that is described above? Please clearly explain your answer.