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题库 / Prep2012-CR-8
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?
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.
People who regularly eat cereals fortified with vitamin supplements sometimes neglect to eat the foods in which the vitamins occur naturally.
Foods often must be fortified with vitamin supplements because naturally occurring vitamins are removed during processing.
Unprocessed cereals are naturally high in several of the vitamins that are usually added to fortified breakfast cereals.
Cereals containing vitamin supplements are no harder to digest than similar cereals without added vitamins.
情景：很多早餐谷物加了补充维生素来强化。这些谷物中提供100%的每日所需维生素。然而，多样化的早餐比强化谷物早餐是更好的维生素来源。
推理：本题的逻辑十分简单，基本上只要看懂题目，直接解释“多样化的早餐比强化谷物早餐是更好的维生素来源”。
选题方式：略。
选项分析：
A选项：Correct. 食物中，维生素和其他营养素的自然组合使得这些维生素比添加的维生素更有用。 本选项直接解释了“多样化的早餐比强化谷物早餐是更好的维生素来源”的原因。
B选项：吃维生素补充谷物加强早餐的人有时会忽视吃自然维生素的食物。本选项和两种早餐间的对比无关。
C选项：因为自然维生素在处理过程中被破坏了，食品经常必须由维生素补充素强化。本选项和两种早餐间的对比无关。
D选项：未处理谷物在一些经常加入强化谷物早餐的维生素含量高。本选项和两种早餐间的对比无关。
E选项：包含补充维生素的谷物和不添加的谷物消化难度差不多。本选项讨论的是消化问题，和推理文段无关。
虽然包含维他命补充物的谷物cereal可以提供100%的营养，但是一个均衡的早餐比起cereal来说是一个更好的维他命营养来源。问support
choice a,食物中，维生素和其他营养素的自然组合使得这些维生素比添加的维生素更有用。correct
choice b,吃维生素补充谷物加强早餐的人有时会忽视吃自然维生素的食物。irrelevant, 已经说了这些补充物可以提供100%的营养来源
是类比
是不是方案目的
因果
不太清楚推理方式的情况下做对了，后来想想，也许是类比推理。虽然不清楚推理方式可能也能做对题目，但是有了明确断定好的推理方式有助于找到解题的方向。
类比