Professor Mark, Director of the Public Health Research Centre, said: “Many people are already aware of the benefits of physical activity on their general health, but now we are seeing more evidence that suggests it also has a positive effect on a person's mental well­being. The latest research highlights just how important it is to ensure that people are working and living in environments that allow them to be both physically active and mentally healthy.”

　　文章大意：最新研究表明，增加每周锻炼身体的次数，能降低人们患上抑郁症的风险。

　　1．The underlined word “odds” in Paragraph 1 probably means “________”．

　　A．benefits B．intervals

　　C．risks D．ages

　　答案：C　词义猜测题。根据第四段中的“If an adult between his twenties and forties who isn't physically active became active 3 times per week, he would reduce his risks of depression by about 16%”可知，人们每周锻炼三次，能让患抑郁症的可能性降低大约16%。由此可推断出，odds和risks的意思一样，故C项正确。

　　2．According to the second paragraph, if people increase their weekly activity, ________.

　　A．their depressive symptoms will be fewer

　　B．their depressive symptoms will be more

　　C．they will become much younger

　　D．they will become more depressive

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