Questions 3 and 4 will be based on the following news item.

单项选择题A．She blushed when talking to a group of people.B．She couldn t help looking at a sign when she gave a presentation.C．She didn t know the answer to the professor s question.D．She felt embarrassed talking to the man.

单项选择题A．It is obviously a mental process.B．It is more of a physical process than a mental action.C．It is a process that involves one s entire body.D．It involves the muscles as well as the brain.