Questions 11 to 18 are based on the conversation you have just heard.

单项选择题A．Throw himself in front of the train.B．Throw himself against the bus.C．Squeeze himself between the rails.D．Strike himself with the flowerpot.

单项选择题A．It is brand-new but very likely to be an idle speculation.B．It is interesting and proves to be correct.C．It contradicts the traditional interpretation of the universe.D．It is inspiring but lacking in actual data.