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  3. Eating fruits and vegetables has proved helpful in preventing various chronic(慢性的)illnesses. Does that mean the more the better?

Eating fruits and vegetables has proved helpful in preventing various chronic(慢性的)illnesses. Does that mean the more the better?

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问题     Eating fruits and vegetables has proved helpful in preventing various chronic(慢性的)illnesses. Does that mean the more the better?
    The data from 16 studies were analyzed,【C1】______ more than 833,234 adults. The span of the studies【C2】______ from 5 to 26 years. 56,423 adults participating in the studies died. Overall, the more fruits and vegetables people【C3】______ , the less likely they were to have died during the study period. For every【C4】______ serving eaten, up to four a day, the chance of dying for any reason decreased by 5 percent. Those who ate four servings a day were 24 percent less【C5】______ to have died than those who ate none at all. However, eating five or more daily servings indicated no added【C6】______ . Higher consumption of fruits and vegetables also showed【C7】______ no effect on the probability of dying from cancer.
    Although the recommendation of the【C8】______ serving varies with age, health status and other factors, most adults are called for to fill half their plate with fruits and vegetables. The food pyramid(金字塔)model【C9】______ that adults eat three to five servings of vegetables and two to four servings of fruits daily.
    However, the study did not determine whether certain fruits or vegetables were more or less beneficial than others. It indeed inferred that there’s a(n) 【C10】______ to how much fruit and vegetables are good for you.
A)additional I)investing
B)annual J)involving
C)benefit K)likely
D)boundary L)limit
E)consumed M)probable
F)daily N)ranged
G)essentially O)suggested
H)financially
【C9】
选项
答案O
解析 空格位于主语The food pyramid model和宾语从句引导词that之间，句子缺少谓语成分，且动作发生在过去，故应填入动词过去式作谓语，后面that宾语从句的谓语动词使用的是虚拟语气，即省略should的动词原形eat。此句意为“食物金字塔模式建议成年人每天吃三到五份蔬菜和二到四份水果”，故空格处应填入suggested“建议”。
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