TPO 第12套口语 Question 6 重新选题
Using the points and examples from the lecture, explain how substitute goods and complement goods influence demand for a particular product.
(1)explain the concepts of substitute goods and complement goods.
(2)use specific examples mentioned in the lecture to explain the influence.
(1)Substitute goods: similar enough to be interchangeable. Increase the price of one means increase the demand of the other. Butter and margarine(人造黄油).
(2)Complement goods: must be used together, completement each other. Their prices go up and down together. CD and CD player.
(1)In the listening material, the professor introduces two concepts. The first is ... ; The second is ...
(2)The example used to explain the first one is ...
(3)The example used to explain the second one is ...