2. 外语
  3. Advocates of the Raw Food Diet claim that raw food is the optimal fuel for the human body, since the digestive system evolved be

Advocates of the Raw Food Diet claim that raw food is the optimal fuel for the human body, since the digestive system evolved be

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问题 Advocates of the Raw Food Diet claim that raw food is the optimal fuel for the human body, since the digestive system evolved before humans started cooking with fire. Nutrition experts are in disagreement about the benefits and the pitfalls of a raw diet. Proponents of the Raw Food Diet believe that raw food contains enzymes that aid its own digestion, and that they help populate the digestive tract with beneficial flora that stimulates the human immune system. Opponents of the Raw Food Diet point out that raw food may contain harmful bacteria and parasites, and that certain products, such as kidney beans and buckwheat, are unsafe to consume in their raw form and that ignorance in such matters could result in poisoning. Additionally, critics are concerned that the structure of some foods, like tomatoes and carrots, makes it virtually impossible to access the available nutrients without cooking. Opponents also criticize raw food advocates as promoting data that is anecdotal, rather than scientific, in nature.  
The primary purpose of the passage is to
选项 A、compare the Raw Food Diet to other alternative diets
B、provide recipes and suggest specific products for people interested in exploring the Raw Food Diet
C、provide an overview of the Raw Food Diet, highlighting some of the common arguments for and against it
D、argue for the need of healthy alternatives to mainstream nutrition
E、warn the readers against restrictive diets such as the Raw Food Diet
答案C
解析 The best answer is C. The passage defines the Raw Food Diet primarily through the arguments of its proponents and opponents. Since the passage contains very little else, choice C is the best answer.
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