【新编英语教程】（第一册）Unit8 人类需求（2/3)

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        HINT：Christmas
Just think of the different types of meat we eat: beef, mutton, pork, chicken, turkey, goose, and rabbit. We could manage on a diet of one kind of meat, but how monotonous it would become! Even turkey, which most of us eat only at Christmas, would become monotonous if we ate it every day. Yet we cannot live on meat alone, and need other foods like bread and fruit to provide us with other essential nutrients which we need to keep our bodies healthy.
We can agree with primitive man that food is a basic need, but we differ from him in our food wants because of the wide variety of food we have available compared with him; we have a wider choice. Take fruit, for example, not only can we enjoy the fruits grown in this country, but, because of modern methods of transport and food preservation, we can also enjoy the more exotic fruits from countries thousands of miles away, whereas primitive man is limited in his choice to the kinds of fruit which actually grow where he lives.