如果结果不匹配，请 
更多“某种商品价格下降对其互补品的影响是()。”相关的问题
A.需求缺乏弹性的商品，正常商品，互补品
B.需求富有弹性的商品，劣等商品，互补品
C.需求富有弹性的商品，正常商品，替代品
D.需求缺乏弹性的商品，劣等商品，替代品
A.增加30单位
B.减少30单位
C.增加130单位
D.减少130单位
假定有个消费者每月花费固定数额的收入在下述成对商品上:
(1)玉米饼和拉丁舞;
(2)玉米饼和炸土豆片;
(3)电影票和用咖啡豆磨制的咖啡;
(4)乘公共汽车出行和乘地铁出行。
假如上述成对商品中一种商品的价格上涨，说明这对每种商品需求的影响。在各对中，哪些可能是互补品？哪些可能是替代品？
Suppose that a consumer spends a fixed amount of income per month on the following pairs of goods:
a. tortilla chips and salsa
b. tortilla chips and potato chips
c. movie tickets and gourmet coffee
d. travel by bus and travel by subway
If the price of one of the goods increases, explain the effect on the quantity demanded of each of the goods. In each pair, which are likely to be complements and which are likely to be substitutes？
(1)一堂数学课和一堂经济学课;
(2)网球和网球拍;
(3)牛排和龙虾;
(4)目的地相同的飞机旅行和火车旅行;
(5)熏肉和鸡蛋。
Which of the following combinations of goods are complements and which are substitutes？ Could they be either in different circumstances？ Discuss.
a. a mathematics class and an economics class
b. tennis balls and a tennis racket
c. : steak and lobster
d. a plane trip and a train trip to the same destination
e. ; bacon and eggs
