题目内容
19．You may have noticed that you feel hungry a lot．This is natural----during teens，a person's body needs more nutrients（营养物质 to grow．Snacks are a great way to satisfy that hunger and get all the vitamins and nutrients your body needs．But you need to pay attention to what you eat．Filling your stomach with a lot of fries after class may give you a short-time help，but a snack high in fat and calories will only slow you down in the long time．
To keep energy levels going---and avoid gain weight---keep away from foods like candy or soda．Look for foods like bread and grains and combine them with some food like peanut butter or low-fat milk or cheese．
Choosing healthy snacks means shopping smart．Be careful of the health instructions on food bags．Here are some things to watch out for．
That something is"all natural"doesn't necessarily mean that it's nutrients．For example，"all natural"juice drinks or sodas can be filled with sugar （which means they'll be high in calories and give you little nutrition．）
A granola bar （格兰诺拉燕麦棒） is a good example of a snack that people think is healthy．Although granola bas can be a good source of certain vitamins and nutrients，may also conain a great deal of fat，including a particularly harmful type of fat called trans fat．Check the Nutrition Facts instructions on the bag to be sure．
29．We need snacks toC．
A．reduce energy
B．gain weight
C．help grow
D．keep healthy
30．In order to choose healthy snacks，we should try to make sure thatB．
A．They are all natural
B．They are high in nutrition
C．They have good bags
D．They contain trans fat
31．Which of the following snacks is unhealthy according to the text？B
A．Peanut butter
B．Candies and soda
C．Low-fat milk
D．bread
32．People consider granola bar a healthy snack becauseA．
A．it contains some vitamins and nutrients
B．it provides much fat
C．it contains a great deal of fat
D．it is a good source of calories．
分析 本文属于说明文阅读，作者通过这篇文章主要向我们描述了挑选自己零食的一些方法，让我们更健康的生活．
解答 29．C．细节理解题．根据文章第一段中的Snacks are a great way to satisfy that hunger and get all the vitamins and nutrients your body needs，可知我们需要零食是由于它们可以帮助我们的成长，应选C．
30．B．推理判断题．分析文章中第三段落的内容Choosing healthy snacks means shopping smart．Be careful of the health instructions on food bags，可推断我们在选购零食的时候要注意所选购的零食是否含有营养，故选B．
31．B．细节理解题．根据文章第三段中的To keep energy levels going---and avoid gain weight---keep away from foods like candy or soda，可知B选项中所提到的两种食物是不健康的，应选B．
32．A．细节理解题．根据文章第六段中的granola bars can be a good source of certain vitamins and nutrients，可知人认为燕麦棒是健康的零食因为它含有的维生素和营养物质；应选A．
点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
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