Happiness can be described as a positive(实在的事物, 确定的) mood and a pleasant state of mind. A good education and income are usually considered necessary for happiness. But the rich are not necessary to be happier than the middle-income group or even those with very low incomes. People with a college education are somewhat(稍微) happier than those who did not graduate from high school; It is believed that this mainly because they have more opportunities to control their lives. Yet people with a college education may be less happy than those with on college education. .. 全文参考英语写作文网吧： http://www.***.cn/dxyy/2855.html lcl1977