Questions 14~17 are based on the following monologue introducing the origin of an expression.You now have 20 seconds to read Questions 14~17.根据听到的内容,回答4~7题What does the expression“Where iS the beef”mean?[A]The beef iS lost.[B]Something is not as good as described.[C]The beef is not as good as it is said to be.[D]The food has turned bad.