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    根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

    Food safety is a problem in all places around the world and people in different areas of the world prepare foods in different ways. The WHO released (发布) five simple rules for preparing food in a safe way. They call these rules the “Five Keys to Safer Food”.

    Key 1: Keep clean

    1.. People should wash their hands often — before touching food and while they are preparing food. People should wash all surfaces and equipment used for preparing food.

    Key 2: Separate raw (生的) and cooked

    Raw foods should not touch prepared foods. 2..

    Key 3: 3.

    People should cook eggs and meat especially carefully. These foods may carry more micro-organisms (微生物) than other foods. Food like soup must be boiled for at least a minute to make it be cooked completely. It is also important that people re-heat cooked food completely.

    Key 4: Keep food at safe temperatures

    When people finish eating, they should keep the left food in a refrigerator below 5℃and shouldn’t store it for too long. At room temperature, about 20℃, the amount of micro-organisms can increase very quickly. But temperatures above 60℃ or below 5℃ control the growth of micro-organisms. 4..

    Key 5: Use safe water and raw materials

    5.. Damaged or old food may develop harmful chemicals as it gets older.

    A. Cook completely

    B. This key tells about the importance of washing

    C. Eat healthily

    D. They can live where we make food

    E. People should use safe water and choose fresh foods

    F. They cannot grow as quickly in a very hot or very cold environment

    G. People should use separate equipment and tools for touching and preparing raw foods

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