完形填空
Do you see the glass as half-full rather than half-empty? Such cliches (陈词滥调) have become【C1】______questions, as researchers examine with great care the power of positive thinking. Research is proving that optimism can help you to be happier, healthier and more successful. Pessimism leads,【C2】______, to hopelessness, sickness and failure, and is linked to【C3】______, loneliness and painful shyness. If we could teach people to think more positively, it would be like protecting them against these【C4】______illnesses. The optimist feels in control【C5】______his own life. If things are going badly, he acts quickly, looking for solutions, forming a new plan of action, and【C6】______advice. The pessimist feels like a toy of fate and moves slowly. He doesn' t seek advice, because he assumes nothing can be done. Many studies【C7】______that the pessimist' s feeling of helplessness weakens the body' s immune system. The pessimist doesn' t take good care of himself. Feeling passive and unable to avoid life' s blows, he expects ill health and other misfortunes, no matter what he does. He eats junk food, avoids exercise, and【C8】______the doctor. Most people are a(n)【C9】______of optimism and pessimism, but are in favor of one direction or the other. It is a pattern of thinking learned at our mothers' knees. It grows out of thousands of cautions or【C10】______, negative statements or positive ones. Pessimism is a hard habit to break but it can be done. So, if you are a pessimist, there are ways.
【答案解析】根据空后的“negative statements or positive ones”可知，or连接的是两个意义相反的事物(悲观陈述或乐观陈述)，故空处应填入和caution(警告)意思相反的词，所以encouragement(鼓励)符合语境。pressure：压力；fight：斗争，搏斗；criticism：批判。故选D。