2. 职称英语
  3. A strict vegetarian is a person who never in his life eats anything【B1】_____

A strict vegetarian is a person who never in his life eats anything【B1】_____

游客2023-08-30  49
问题     A strict vegetarian is a person who never in his life eats anything【B1】______ from animals. The main 【B2】______ to vegetarianism on a long-term basis is the difficulty of getting enough protein the【B3】______ element in food. If you have ever been without meat or other animal foods for some days or weeks (say, for【B4】______ reasons), you will have noticed that you tend to get【B5】______ rather weak. You are glad when the fast is over and you get your reward of an【B6】______  meat meal.
    Proteins are built up from【B7】______ 20 food elements called ’amino-acids’ (氨基酸), which are found more【B8】______ in animal protein than in vegetable protein. This means you have to eat a great deal more vegetable than animal food in order to get enough of these amino-acids. A great deal of the vegetable food goes to waste in this process and【B9】__________________________ .
    The economic side of the question, though, must be considered. Vegetable food is much cheaper than animal food.【B10】_____________________________ , a consistent vegetarian, if he is to gain the necessary 70 grams of protein a day, has to consume a greater bulk of food than his digestive organs can comfortably deal with.【B11】______________________________________ . [br] 【B4】
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