2. 外语
  3. These days, science may have dissected almost every element of our diet, but many of us still feel at the sea. Even when sticki

These days, science may have dissected almost every element of our diet, but many of us still feel at the sea. Even when sticki

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问题     These days, science may have dissected almost every element of
our diet, but many of us still feel at the sea. Even when sticking to【S1】________
official advice, healthy foods that seem to energize one person can cause
another to feel fatigued and bloated. In 2015, scientists from Israel
tracked blood sugar levels of 800 people over several days, making the
surprising discovery individuals’ biological response to identical foods【S2】________
varied wildly. Some people had a blood glucose "spike" after eating
sugary ice cream, when others’ glucose levels only increased with【S3】________
starchy rice—a finding at odds against conventional wisdom.【S4】________
    Our bodies’ idiosyncratic handling of nutrients seem to be down to【S5】________
our genetics, the microbes in our gut, and variations in our organs’
internal physiology. Clinical trials like those are pioneered by Lind have【S6】________
given us general dietary guidelines, but nutrition research tends to assume
all humans are the same, and so can miss the nuances and specifically【S7】________
needs of the individual.
    In the next 10 years, the emerging field of "personalized nutrition"
will use genetic tests to fill in those gaps to offer healthy eating guidance
tailoring to the individual. Some companies have already tested your【S8】________
DNA and offered dietary advice—but the advice can be hit-and-miss.
By 2028, we will understand much more about our genetics. Dr. Jeffrey
Blumberg, a professor of nutrition science and policy at Tufts University
in Massachusetts, is one of the most outspoken advocate of this new【S9】________
science. He insists that DNA testing will unlock personalized nutrition.
"I’ll be able to tell you what kinds of fruits, what kinds of vegetables
and what kinds of whole grains you should be choosing, or exactly how
often," he says.
    Sadly, personalized nutrition makes cook meals for the whole【S10】________
family a little bit more taxing.
【S3】
选项
答案when→while
解析 连词误用。在该句中，前面提到“一些人在吃了含糖的冰淇淋后血糖激增”，后面提到“另一些人的葡萄糖水平只会因含淀粉的米饭而升高”，可知前后是对比关系。when和while在引导时间状语从句时，在某些情况下可以互换使用，但本句并非时间状语从句，而是表示对比，意为“而，却”，这种情况下只能使用while。故将when改为while。
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