Other trends and inventions had also helped make it possible for Americans to vary their daily diets. Growing urban population created demand that encouraged fruit and vegetable farmers to raise more produce. Railroad refrigerator cars enabled growers and meat packers to ship perishables great distances and to preserve them for longer periods. Thus, by the 1890’s, northern city dwellers could enjoy southern and western strawberries, grapes, and tomatoes, previously available for a month at most, for up to six months of the year. In addition, increased use of iceboxes enabled families to store perishables. As easy means of producing ice commercially had been invented in the 1870’s, and by 1900 the nation had more than two thousand commercial ice plants, most of which made home deliveries. The icebox became afixture in most homes and remained so until the mechanized refrigerator replaced it in the 1920’s and 1930’s.
Almost everyone now had a more diversified diet. Some people continued to eat mainly foods that were heavily in starches or carbohydrates, and not everyone could afford meat. Nevertheless, many families could take advantage of previously unavailable fruits, vegetables, and dairy products to achieve more varied fare.
Which of the following types of food preservation was NOT mentioned in the passage?
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Lời giải:
Báo saiGiải thích: Thông tin nằm ở: “Drying, smoking and salting could preserve meat for a short time... Gail Borden developed a means of condensing and preserving milk... The icebox became a fixture in most homes.”
Dịch nghĩa: Phương thức bảo quản thực phẩm nào dưới đây không được đề cập đến trong bài?
A. Drying: làm khô
B. Chemical additives: phụ gia hóa chất
C. Canning: đóng hộp
D. Cold storage: trữ lạnh