B．The researchers took the pictures of the 35 people in the research.

　　C．Increasing your intake of greens by 2.9 portions a day can greatly improve your health.

　　D．People who increased their intake of greens by 3.3 portions a day were found the most attractive after six weeks.

　　解析：细节理解题。根据第一段“They monitored the food intake of 35 people and took pictures of their faces, 可知选B。B

　　2．Which of the following is NOT the function of carotenoids?

　　A．They can protect against cell damage from pollution and UV rays.

　　B．They can prevent heart disease and cancer.

　　C．They can prevent age­related diseases.

　　D．They can keep you in good health.

　　解析：细节理解题。根据第二段“Fruit and vegetables are rich in carotenoids (类胡萝卜素)可知没有提到选项D的内容故选D。We knew in the past that eating a few more carrots could make us look appealing.

　　C．The research showed the improvement in skin is linked with the levels of carotenoids in it.

　　D．Among hundreds of carotenoids, lycopene is thought to have the most dramatic effect on the skin.

　　解析：细节理解题。根据第二段最后一句话可知人们以前并不知道吃胡萝卜可以让人看起来更漂亮故选B。________．give tomatoes and red peppers their red colour

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