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Passage Two
短文二
Most Americans don't eat enough fruits, vegetables or whole grains.
绝大多数美国人都没有食用足够多的水果、蔬菜或全谷物。
Research now says adding fiber to the teen diet may help lower the risk of breast cancer.
研究者现在宣称，在青少年饮食中添加纤维有助于降低患乳腺癌的风险。
Conversations about the benefits of fiber are probably more common in nursing homes than high schools.
有关纤维益处的交谈，养老院可能要比高中学校更普遍。
But along comes a new study that could change that.
但一项新研究的出现可能会改变这一状况。
Kristi King, a diet specialist at Texas Children's Hospital, finds it hard to get teenage patients' attention about healthy eating.
田纳西儿童医院的饮食专家克里斯蒂·金发现，要引起青少年患者对健康饮食的注意很难。
By telling them they are eating lots of high-fiber foods could reduce the risk of breast cancer before middle age.
但通过告诉他们食用大量高纤维的食物能降低中年之前患乳腺癌的风险。
That's a powerful message.
会是一个强有力的信息。
The new finding is based on a study of 44,000 women.
这个新发现是基于一项涉及44,000名妇女的研究。
They were surveyed about their diets during high school and their eating habits were tracked for two decades.
该研究调查了她们高中时期的日常饮食，并跟踪她们的饮食习惯长达二十年。
It turns out that those who consumed the highest levels of fiber during adolescents had a lower risk of developing breast cancer, compared to women who ate the least fiber.
研究结果显示，相对于那些青少年时期消耗最少纤维的妇女，那些在该时期消耗了最高水平纤维的人患乳腺癌的风险要更低。
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.
这项重要的研究表明，你在高中阶段食用的纤维越多，日后患乳腺癌的风险就越低。
The finding points to long-standing evidence that fiber may reduce circulating female hormone levels, which could explain the reduced risk.
该研究证实了长期存在的证据，那就是纤维能够降低雌性激素的循环水平，它能够解释该风险降低的原因。
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.
在这里最重要的一点是你食用的纤维越多，那么你身体里的荷尔蒙水平可能就越低，因此一生当中患乳腺癌的风险就越低。
High-fiber diets are also linked to a reduced risk of heart disease and diabetes.
高纤维的饮食还可以降低心脏病和糖尿病的患病风险。
That's why women are told to eat 25 grams of fiber a day—man even more.
这就是为什么女性被告知一天要食用25克的纤维——男性甚至要食用更多。
Questions 13 to 15 are based on the passage you have just heard.
问题13到15是基于你刚才所听到的那篇短文。
Question 13: What does the new study tell about adding fiber to the teen diet?
问题13：有关在青少年饮食中添加纤维一事，这项新研究表明了什么信息？
Question 14: What do we learn about the survey of the 44,000 women?
问题14：有关44,000名女性的调查，我们能从中得到什么信息？
Question 15: What explanation does the speaker offer for the research finding?
问题15：说话者给这项研究发现作出了什么样的解释？
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