21 . Many breakfast cereals are fortified with vitamin supplements. Some of thes

游客2024-01-13  17

问题 21 . Many breakfast cereals are fortified with vitamin supplements. Some of these cereals provide 100 percent of the recommended daily requirement of vitamins. Nevertheless, a well-balanced breakfast, including a variety of foods, is a better source of those vitamins than are such fortified breakfast cereals alone. Which of the following, if true, would most strongly support the position above?

选项 A、In many foods, the natural combination of vitamins with other nutrients makes those vitamins more usable by the body than are vitamins added in vitamin supplements.
B、People who regularly eat cereals fortified with vitamin supplements sometimes neglect to eat the foods in which the vitamins occur naturally.
C、Foods often must be fortified with vitamin supplements because naturally occurring vitamins are removed during processing.
D、Unprocessed cereals are naturally high in several of the vitamins that are usually added to fortified breakfast cereals.
E、Cereals containing vitamin supplements are no harder to digest than similar cereals without added vitamins.

答案 A

解析 通过指出维生素出现在与其他营养物质的自然组合时,能够比那些以添加剂形式增加的维生素能更好地被身体利用,选项(A)提出了理由使人相信一份搭配均衡的早餐比起增强型的早餐谷类食物是一种更好的获取维生素的来源,(A)是正确答案;选项(B)不支持短文中提出的观点,尽管提出的观点,如果是正确的与提到的人们有关;选项(E)描述了增强型谷类食物和其他谷类食物的相似之处;选项(C)提出了一个向加工过的谷类食物添加添加剂的理由;选项(D)给出了关于未经过加工的谷类食物的信息,但都没有为提出的搭配均衡的早餐相对于增强型的谷类食物的优势增加支持。
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