第一节 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 What is the total cost for the two tickets

A．the prices of McDonald's foods will be much higher
B．consumers will find the taste of McDonald's foods different
C．many other food companies will do what McDonald's does
D．fatness will disappear in American society sooner or later

A．lower the costs of the products
B．make its food taste better than ever before
C．cure the heart disease
D．do good to the health of consumers