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  3. Eating an apple a day doesn’t keep the doctor away, but it does reduce the amount of trips you make to the drug store per year.

Eating an apple a day doesn’t keep the doctor away, but it does reduce the amount of trips you make to the drug store per year.

admin2018-04-25  52
问题     Eating an apple a day doesn’t keep the doctor away, but it does reduce the amount of trips you make to the drug store per year. That’s according to a new study that investigates whether there’s any truth in the old saying.
    A team of researchers led by Dr Matthew Davis, of the University of Michigan School of Nursing, asked 8,399 participants to answer survey questions about diet and health. A total of 753 were apple eaters, consuming at least 149g of raw apple per day. The remaining 7,646 were classed as non-apple eaters. When both groups answered questions on trips to the doctor and trips to the drug store per year, the apple eaters were found to be 27% less likely to visit the druggist for drugs.
    Trips to the doctor were not significantly affected by apple consumption, though. "Evidence does not support that an apple a day keeps the doctor away. However, the small number of US adults who eat an apple a day does appear to use fewer prescription medications," the study concludes.
    Apple eaters were also found to be less likely to smoke and be more likely to have a higher educational attainment than non-apple eaters. While apples do not compete with oranges, they do contain some immune (免疫的) system-increasing vitamin C, which may be why apple-eaters visit the druggist less. With over 8mg of vitamin C per medium-sized fruit, an apple can provide roughly 14% your daily recommended intake.
    Previous studies have also linked apple consumption to a lower risk of Type 2 diabetes (二型糖尿病), improved lung function and a lower risk of colon (结肠) cancer.
What can we learn from the passage?
选项 A、Apples are better than oranges.
B、Apples do have some vitamin C to increase the immune system.
C、Apples can help cure certain diseases.
D、Apples can provide people with sufficient daily intake of energy.
答案B
解析 由第四段第二句话中的“they do contain some immune system-increasing vitamin C”可知，苹果中确实含有能增强免疫系统的维生素C，故选B。
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