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  3. It is common knowledge that healthy foods such as fruits and vegetables contain certain nutrients that promote good health—namel

It is common knowledge that healthy foods such as fruits and vegetables contain certain nutrients that promote good health—namel

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问题     It is common knowledge that healthy foods such as fruits and vegetables contain certain nutrients that promote good health—namely vitamins and minerals that are essential to the body. However, once these compounds enter the body and become digested, do they still possess the same healthful【C1】________? Do they still perform the desired action to create a【C2】________result?
    That is what researchers at Newcastle University recently set out to【C3】________. Scientists analyzed the polyphenols, a type of antioxidant, in green tea to see how they【C4】________the body once digested.【C5】________the polyphenols in tea are known for health benefits, Dr. Ed Okello and his team wanted to better understand how these polyphenols act once【C6】________the body. Their study, which was recently published in the journal, showed that the chemicals【C7】________the breakdown of polyphenols were more effective at promoting health than the polyphenols【C8】________. "There are certain chemicals we know to be【C9】________ and we can identify foods which are rich in them but what happens during the digestion process is【C10】________to whether these foods are actually doing us any good," said Dr. Okello.
    The research showed that【C11】________the polyphenols were digested in the gut, the resulting compounds had a greater ability to bind to toxic substances.
    "Green tea has been used in Traditional Chinese Medicine for centuries and what we have here provides the scientific【C12】________why it may be effective【C13】________ some of the key diseases we face today."
    Tea is one of the many common and natural dietary【C14】________in Asian cultures shown by modern science to have【C15】________unique health benefits. Mushrooms are another common food that has been【C16】________for centuries. They are used【C17】________in many cooking, (notably Chinese, Korean, European, Japanese and Indian). They are also used in Traditional Chinese Medicine for their ability to promote immune health. Certain species of mushrooms have great【C18】________abilities to regulate the immune system and promote【C19】________within the body. These mushroom species【C20】________benefits even after digestion and absorption into the blood stream.
【C8】
选项 A、enough
B、only
C、alone
D、lonely
答案C
解析 本句讨论在多酚在分解前后(即the polyphenols和the chemicals)在促进健康方面的比较，the chemicals效果更明显(more effective)，因此空格处词语应具有强调意义，选C项alone。only与alone作形容词均可表“仅有的，单独的”，但alone须置于被修饰词之后，only往往置于被修饰词前，因此排除B项only。A项enough作为后置定语时往往表示数或量至少满足或可能超过一定的要求或需求，而本题不强调数量的多少。本句是通过比较得出二者哪个效果更明显(more effective)，D项alike表示“相似的”，不符合语义逻辑。
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