[单项选择]Questions 62 to 66 are based on the following passage. Many of us still tend to regard emotions as interfering with rational thought, and sometimes landing us in trouble. But in recent years psychologists have taken quite a different view. Keith Oatley, Professor of psychology at Glasgow University, is involved in the research which shows the fundamental importance of emotions. He believes we are very ambivalent about them: we think of our emotions as being irrational, but we also consider them as essential to being human. For example, Mr. Spock, a character in the television series Startrek is super-intelligent, and he has no emotions at all! However, he is never made captain of the spaceship. Maybe, this is because Mr. Spock is not the kind of person you can identify with a person who shows his emotions. As Professor Oatley points out, our emotions have very important functions, for example, fear. If we cross the road and a car approaches, we usually fr A. Fear helps us to be careful about our surroundings. B. Happiness inspires us to continue what we are doing. C. Anger may stimulate us to make greater efforts. D. Anger tends to do us mote hann than good.