听一段材料，回答下面几个小题。
What percentage of the world’s tea exports go to Britain?
A. Almost 15%            B. About 30%          C. Over 40%
Why do tea tasters taste tea with milk?
A. Most British people drink tea that way.
B. Tea tastes much better with milk.
C. Tea with milk is healthy.
Who suggests a price for each tea?
A.Tea tasters.           B. Tea exporters.      C. Tea companies.
What is the speaker talking about?
A. The life of tea tasters.
B. Afternoon tea in Britain.
C. The London Tea Trade Centre.