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  3. Don’t worry, be happy and, according to a new research, you will also be healthy. It is estimated that over the course of on

Don’t worry, be happy and, according to a new research, you will also be healthy. It is estimated that over the course of on

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问题     Don’t worry, be happy and, according to a new research, you will also be healthy.
    It is estimated that over the course of one year, Americans suffer 1 billion colds. But new research shows that all it may take to【B1】______this common affliction is a positive and upbeat attitude.
    People who are happy, relaxed and【B2】______are less likely to catch a cold than those who are depressed, nervous or angry, according to a new study【B3】______in the journal Psychosomatic Medicine.
    Healthy volunteers were first asked to rate their【B4】______to experience positive and negative emotions — how often they felt pleased, relaxed, happy, or anxious, depressed and hostile. The【B5】______were next given a squirt up the nose of a rhinovirus(鼻病毒), the nasty little germ that cause colds. Researchers then watched the volunteers to see who came down with a cold and how the unlucky ill【B6】______their cold symptoms. "We found that people who regularly experience positive emotions, when exposed to rhinovirus, are【B7】______protected from developing illness," said Dr. Sheldon Cohen,【B8】______author of the study and a psychology professor at Carnegie Mellon University.
    【B9】______. So how can your emotions influence your health? In simple terms,【B10】______.
    In addition, happy and relaxed people are prone to better health practices than their negative and stressed counterparts.【B11】______.
【B8】
选项
答案lead
解析 由空后的author可知，本空应填一形容词，所在短语作逗号前Dr．Sheldon Cohen的同位语。lead author在此意为“(研究)负责人”。
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