Passage One Questions 26 to 28 are based on the passage you have just heard.

单项选择题A．He becomes more independent.B．He becomes more challenging.C．He becomes more observant.D．He becomes more optimistic.

单项选择题A．She graduated with honors.B．She was good at all school subjects.C．She decided to go on with her study.D．She decided to end her school life forever.

单项选择题A．It will reduce the amount of pollutants in the air.B．It will increase the amount of unpleasant odors from vehicles.C．It will eventually destroy the ozone layer.D．It will reduce the cost of running large vehicles.

单项选择题A．I hour.B．3 hours.C．2 hours.D．Four hours.

单项选择题A．They are more convenient.B．Their storage space is more accessible.C．They are more energy-efficient.D．They take up less floor area.