Thứ sáu, 22/11/2024
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Câu hỏi:

09/07/2024 98

Read the following passage and mark the letter A B, C, or D on your answer sheet to indicate the correct answer to each of the questions

All foods contain water - cabbage and other leaf vegetables contain as much as 93% water, potatoes and other root vegetables 80%, lean meat 75% and fish anything from 80% to 60% depending on how fatty it is. If this water is removed, the activity of the bacteria which cause food to go bad is checked.

    Fruit is sun-dried in Asia Minor, Greece, Spain and ot her Mediterranean countries, and also in California, South Africa and Australia. The methods used vary, but in general the fruit is spread out on trays in drying yards in the hot sun. In order to prevent darkening, pears, peaches and apricots are exposed to the fumes of burning sulphur before drying. Plums for making prunes, and certain varieties of grapes for making raisins and currants, are dipped in an alkaline solution in order to crack the skins of the fruit slightly and remove their wax coating, so increasing the rate of drying.

     Nowadays most foods are dried mechanically; the conventional method of such dehydration is to put food in chambers through which hot air is blown at temperatures of about 110°C at entry to about 45°C at exit. This is the usual method for drying such things as vegetables, minced meat, and fish.

    Liquids such as milk, coffee, tea, soups and eggs may be dried by pouring them over a heated horizontal steel cylinder or by spraying them into a chamber through which a current of hot air passes. In the first case, the dried material is scraped off the roller as a thin film which is then broken up into small, though still relatively coarse flakes. In the second process it falls to the bottom of the chamber as a fine powder. Where recognizable pieces of meat and vegetables are required, as in soup, the ingredients are dried separately and then mixed.

    Dried foods take up less room and weigh less than the same food packed in cans or frozen, and they do not need to be stored in special conditions. For these reasons they are invaluable to climbers, explorers and soldiers in battle, who have little storage space. They are also popular with housewives because it takes so little time to cook them.

Nowadays the common method for drying vegetables and minced meat is ______.

A. spreading them out on trays in drying yards

B. putting them in chambers and blowing hot air through

Đáp án chính xác

C. dipping them in an alkaline solution

D. pouring them over a heated horizontal steel cylinder

Trả lời:

verified Giải bởi Vietjack

Đáp án B

Kiến thức: Đọc hiểu

Giải thích:

Ngày nay, phương pháp phổ biến để sấy rau và thịt băm là ______.

A. phun chúng trên khay trong sân phơi

B. đưa chúng vào buồng và thổi không khí nóng qua

C. nhúng chúng trong dung dịch kiềm

D. đổ chúng qua một xy lanh thép ngang nóng

Thông tin: Nowadays most foods are dried mechanically; the conventional method of such dehydration is to put food in chambers through which hot air is blown at temperatures of about 110°C at entry to about 45°C at exit.

Đáp án:B

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