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  3. Are organically grown foods the best food choices?The advantages claimed for

Are organically grown foods the best food choices?The advantages claimed for

游客2023-07-11  49
问题     Are organically grown foods the best food choices?The advantages claimed for such foods over【C1】______grown and marketed food products are now being debated.【C2】______of organic foods-a term whose meaning varies greatly-frequently proclaim that【C3】______products are safer and more nutritious than others．
    The growing interest of【C4】______in the safety and nutritional quality of the typical North American diet is a welcome development.【C5】______，much of this interest has been sparked by sweeping claims that the food supply is unsafe or inadequate in meeting nutritional needs.Although most of these【C6】______are not supported by scientific evidence，the preponderance(优势)of written material【C7】______such claims makes it difficult for the general public to separate fact from【C8】______．As a result，claims that eating a diet【C9】______entirely of organically grown foods prevents or【C10】______disease or provides other benefits to health have become widely【C11】______and form the basis for folklore．Almost daily the public is【C12】______by claims for“no-aging”diets，new vitamins and other【C13】______foods．There are numerous unsubstantiated reports that【C14】______vitamins are superior to synthetic ones，that fertilized eggs are nutritionally【C15】______than unfertilized eggs and the【C16】______．
    One thing that most organically grown food products seem to have in common is that they【C17】______more than conventionally grown foods．But in many cases consumers are【C18】______if they believe organic foods can maintain health and provide better nutritional quality than conventionally grown foods．So there is real cause for concern if consumers particularly those with【C19】______incomes，distrust the【C20】______food supply and buy only expensive organic foods instead． [br] 【C15】
选项 A、worse
B、higher
C、better
D、greater
答案 C
解析 语义衔接题。空格所在句仍是reports的定语从句。按上一句推断还是说A比B好。这是指受精蛋比未受精蛋营养价值高，这里的更高是指“更好”，即选项C) better，因为具体比较内容还是fertilized eggs与unfertilized eggs，所以选项B) higher不可选。所以答案是C) 。
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