[originaltext] [13] Most Americans don’t eat enough fruits, vegetables or wh

游客2023-08-15  56

问题  
[13] Most Americans don’t eat enough fruits, vegetables or whole grains. Researcher now says adding fiber to the teen diet may help lower the risk of breast cancer.
    Conversations about the benefits of fiber are probably more common in nursing homes than high schools. But along comes a new study that could change that. Kristi King, a diet specialist at Texas Children’s Hospital, finds it’s hard to get teenager patients’ attention about healthy eating, but telling them that eating lots of high-fiber foods could reduce the risk of breast cancer before middle age. That’s a powerful message.
    [14] The new finding is based on a study of 44,000 women. They were surveyed about their diets during high school, and their eating habits were tracked for two decades. It turns out that those who consumed the highest levels of fiber during adolescence had a lower risk of developing breast cancer, compared to the women who ate the least fiber. This important study demonstrates that the more fiber you eat during your high school years, the lower your risk is in developing breast cancer in later life.
    [15] The finding points to long-standing evidence that fiber may reduce circulating female hormone levels, which could explain the reduced risk. The bottom line here is the more fiber you eat, perhaps, a lower level of hormone in your body, and therefore, a lower lifetime risk of developing breast cancer. High-fiber diets are also linked to a reduced risk of heart disease and diabetes. That’s why women are told to eat 25 grams a fiber a day—men even more.
Questions 13 to 15 are based on the passage you have just heard.
13. What does the new study tell about adding fiber to the teen diet?
14. What do we learn about the survey of the 44,000 women?
15. What explanation does the speaker offer for the research finding?

选项 A、It focused on their ways of life during young adulthood.
B、It tracked their change in food preferences for 20 years.
C、It focused on their difference from men in fiber intake.
D、It tracked their eating habits since their adolescence.

答案 D

解析 浏览四个选项,根据选项中出现的focused on,tracked,food preferences,eating habits等词可推测,此题与某人或某物对于饮食的关注或追踪有关。题干问的是关于44,000位女士的调查,我们了解了什么。短文中提到调查了她们在高中时期的饮食,并且跟踪她们的饮食习惯20年,高中属于青春期,故答案为D。A项(它关注了她们成年初期时的生活方式),B项(它跟踪了20年以来她们饮食偏好的变化),C项(它观察了男女在纤维摄入方面的差异),以上三个选项均不是这项调查的内容,故排除。
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