PDF《U N S V》

Issue No.

188, Vol.

2009 December 1st,

2009 Executive Editor: VAN ALLEN Assistant Editor: LEAH http://www.unsv.com U N S V An Elaborate Daily Magazine for English Learners 电子版 TM UNSV.COM 英语辅导杂志 Issue No.188, Vol. 2009, December 1st ,

2009 http://www.unsv.com DEVELOPMENT REPORT - Some Tips for Cold Storage of Foods Page

1 第一部分、英语阅读理解 DEVELOPMENT REPORT - Some Tips for Cold Storage of Foods 发展报告――食物冷藏小贴士 配套 MP3 声音文件下载链接 http://www.unsv.com/voanews/specialenglish/scripts/2009/11/30/0041/ Before refrigerators were invented, the next best thing was an ice box. But another way to keep food fresh is to use an evaporative cooler. A common design is a tall box with several shelves inside to hold the food. The shelves are pieces of metal with many small holes through them. The sides of the box are covered with pieces of thick cloth. Containers of water are placed at the top and bottom of the cooler. The ends of each piece of cloth lie in the water so the cloth stays wet. The cooler is put outdoors, but not in the sun. Air will pass through the wet cloth. The inside of the box will stay several degrees cooler than the outside air temperature. And this may be cool enough to keep foods fresh, at least for a short time. Some foods can make you sick if they are stored in conditions that are not cold enough to prevent the growth of harmful organisms. Freezing can keep some foods in good condition for months after the growing season. Yet foods can be damaged if they are kept too cold. The British development group Practical Action says the best way to prepare foods for storage is at harvest time while still in the field. Use a sharp knife and place the harvested items on a clean surface or directly into storage containers. Do not put them on the ground. Use clean water to remove dirt, and keep the water clean. Usually it is better not to remove outer leaves from fruits and vegetables before storage. Without the leaves, food can become dry. 学习建议:请在笔记本里记下阅读过程中遇到的生词,以及无法理解的短语和句子.文 章阅读完后,带着遇到的问题参考后面的词汇句型讲解和英汉翻译对照.之后的几天, 多抽时间复习留在笔记本里的生词和问题,并阅读文章,以最大化巩固学习成果. Indonesian women sell their harvest in a traditional floating market UNSV.COM 英语辅导杂志 Issue No.188, Vol. 2009, December 1st ,

2009 http://www.unsv.com DEVELOPMENT REPORT - Some Tips for Cold Storage of Foods Page

2 Fruits and vegetables must be cool from field heat before they are put into storage. But cooling them in water can spread fungus throughout the food. A better idea is to harvest foods either early or late in the day, then leave them to cool naturally. Some fruits and vegetables must be stored at zero to four degrees Celsius. Any colder, and they might be damaged. Some foods need to be stored at four to eight degrees, and some need to be stored above eight degrees for best results. Wet the fruits and vegetables so they do not become too dry. The best time to do this is before storage. Cover the items in plastic once they reach the right critical temperature for storage. Most fruits and vegetables need the relative humidity in storage to be kept between eighty-five and ninety-five percent. Finally, leave space between the food containers and the walls of the cold storage area so air can flow. Keep the space clean. And try not to open the doors too often. UNSV.COM 英语辅导杂志 Issue No.188, Vol. 2009, December 1st ,