Questions 23 to 25 are based on the conversation you have just heard.

单项选择题A．It’s not always clear why people behave in certain ways.B．People usually blame others for their mistakes.C．Certain conditions cause drivers to behave strangely.D．The reason for some behavior is Obvious.

单项选择题A．It’s an unwise decision.B．Individual projects are much better.C．The decision will definitely be rejected.D．Many people try to lose weight nowadays.

单项选择题A．They bumped into each other over a swimming pool.B．They avoided each other by turning in different directions.C．They narrowly escaped crashing into each other.D．One plane climbed above the other at the critical moment.

单项选择题A．By reading the BBC book.B．By going to an evening class by BBC.C．By watching BBC programs.D．By going to Spain to talk with Spanish people.

单项选择题A．The airport is closed due to bad weather.B．The flight is following its regular schedule.C．The plane will return to its point of departure.D．An earlier closure affected the airport’s schedule.